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David Murdock

Ricardo DeAratanha / Los Angeles Times

David Murdock

CEO, Castle & Cooke, Dole Food
AGE: 84

A high school dropout, he built a real estate and hotel empire through Castle & Cooke, which he owns along with Dole, the No. 1 fruit and vegetable seller. Last year, the tanned and trim billionaire opened a Four Seasons resort in Los Angeles paired with the adjacent California Health and Longevity Institute, which offers everything from stress relief to cooking classes.