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9. AT&T
AT&T
Fortune 500 rank: 10
2007 profit: $11.95 billion

AT&T's 2007 profit swelled 63% on sales that nearly doubled.

The communications company added 9 million more wireless users in 2007, due in part to its exclusive launch of Apple's iPhone.

It also dissolved the Cingular Wireless brand following its $86 billion BellSouth acquisition.

NEXT: ConocoPhillips

Last updated April 24 2008: 11:07 AM ET
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