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These 10 power couples are each worth tens of billions of dollars, making Beyonce and Jay-Z look middle class in comparison.
Spanish businessman Amancio Ortega Gaona became Europe's richest man after founding the successful global fashion chain Zara in 1975.
Zara is now part of a wider group of fashion labels under parent company, Inditex (IDEXY), along with brands Pull&Bear, Massimo Dutti and Bershka.