No. 10: Jim Walton
Net Worth: $34.7 billion
Source of wealth: Wal-Mart
Jim Walton attending the Reception for 'Merrily We Roll Along' Original Broadway Cast Reunion at City Center in New York City, Feb 14, 2012. [Photo/icpress.cn]
The world in photos (Feb 24-March 2)
The world in numbers: February
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Billionaires speak out on reform roles
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