Goldman Sachs Group Inc.’s private equity arm and Hearst Corp. have acquired online coupon and deal-sharing company Slickdeals from Warburg Pincus, according to a statement Thursday. The deal valued the Las Vegas-based company at more than $500 million, according to people familiar with the matter. Warburg Pincus -- which invested in Slickdeals in 2012 -- will generate a return of 7.2 times on its investment from the sale, said the people, who asked to not be identified because the matter isn’t public. A spokeswoman for Warburg Pincus declined to comment on the deal valuation or the return on investment.