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Death and tributes. Kroc died of heart failure at an hospital in San Diego, California on 14 January, 1984 at age 81. Upon his passing, his wife Joan inherited his fortune, was estimated at $500 million. By the time of Kroc's death, McDonald's had 7,500 locations in 31 countries and was worth $8 billion.
Ray Kroc, at the age of 52, jumped into the burger business with a McDonaldâs franchise in Des Plaines, Illinois in 1955. He founded what became McDonaldâs Corporation the same year and devised a national system for franchise owners that would guarantee uniform quality and a network of national suppliers.