The Missouri Lottery said that a Powerball ticket worth $50,000 from the July 30 drawing was cashed in last week.The winner, who matched four of the five white-ball numbers drawn, as well as the Powerball number, claimed the prize at the lottery's Kansas City regional office on Aug. 3.Lottery officials said the ticket was sold at Zedz in the 3400 block of South Sterling Avenue in Independence.