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43. Susan Wojcicki
VP, Product Management
Google (GOOG)
Previous rank: New
Age: 42

While Mayer keeps the search engine humming, this exec ensures that it keeps generating cash from Adsense and Adwords. As one of Google's first employees, she's also a huge force behind the company's famous culture.

NEXT: Lorrie Norrington
Last updated September 30 2010: 2:47 PM ET
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