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What $17 billion can buy you

With a net worth of $17.2 billion, Fidelity Investments’s Abigail Johnson is by far the wealthiest person in Massachusetts, and number 23 on Forbes’s list of the 400 richest Americans. That’s a lot of mutual fund fees.

Johnson, who now runs Fidelity Financial Services, is the likely successor to her father, Edward Johnson III. At 83, “Ned” remains the Boston company’s chief executive, scraping by on a mere $9.3 billion.

For most people, even imagining that kind of money is difficult. To make it easier, here are some ways to help you comprehend a $17.2 billion portfolio:

Essdras M Suarez/Globe staff

Real estate

  • 17 John Hancock towers (at $1 billion apiece).


AP/Mark J. Terrill

Sports teams

  • All 30 NBA franchises (Forbes values them collectively at $15.3 billion).

Roger Davies for Architectural Digest

New homes

  • 850 mansions equivalent to Tom Brady and Gisele Bundchen’s new $20 million California home.

AP Photo/ Peter Dejong, File

Energy projects

  • About 7 Cape Wind projects (it’s expected to cost about $2.5 billion).

AP Photo/Susan Walsh, File

Tax havens

  • The collective gross domestic product of tax havens Andorra ($4 billion), Liechtenstein ($5.1 billion) and Monaco ($6 billion), with $1 billion to spare.

The Boston Globe

Countries

  • Bosnia and Herzegovina, Botswana, Anguilla (pictured), Democratic Republic of the Congo, and Equatorial Guinea each have a GDP roughly equal to $17 billion.

AP Photo/Pat Sullivan, File

Aircraft

  • 81 Boeing 787-8 planes at $211.8 million apiece.

Dominic Chavez/Globe staff/file 2004

MBTA

  • Run the MBTA at its current $1.9 billion budget for 8 years.

ERIC MILLER/REUTERS

Politics

  • Roughly 25 presidential campaigns (at 2012 levels).

Marcio Jose Sanchez/AP

iPhones

  • 42.5 million new iPhones (64GB iPhone 5S).

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