Wed Jul 9, 2014 9:47am EDT (Reuters) – Dubai airline Emirates finalized a $56 billion order to buy 150 Boeing  777X jets on Wednesday, firming up a commitment made last year, just weeks after scrapping an order with rival planemaker Airbus. The deal includes purchase rights for an additional 50 airplanes which, if exercised, could increase the value to about $75 billion at list prices, Boeing said in a statement. “With the order for 150 […]