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50. Shari Arison
Shari Arison
Chairman
Arison Holdings
Country: Israel
Previous rank: New

Arison, 51, likes water: The holding company that rose to power with cruise operator Carnival Corp. just poured $100 million into Miya, a company with aspirations to solve the global water shortage. The heiress is also in the process of increasing her controlling stakes in Bank Hapoalim, Israel's largest bank.

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Last updated September 29 2008: 1:21 PM ET
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