The owner of more than 7,200 discount stores, fell the most in over six months after cutting its fiscal 2012 forecast. Family Dollar Stores’ earnings this year will be $3.60 to $3.70 per share, the North Carolina chain said. Analysts were expecting $3.66 per share, on average. Third-quarter net income was $124.5 million, or $1.06 per share, up from $111.1 million, or 91 cents, a year earlier.