LAS VEGAS—Nevada has struck a $45 million settlement deal with McKinsey & Company for the global consulting firm’s role in advising opioid makers how to sell more prescription painkillers amid a national overdose crisis. The western state reached the deal after sitting out a multi-state settlement with McKinsey announced in February. The hard bargaining has allowed Nevada to win a settlement that’s three and a half times larger than the average settlement with other states. “Nevada needed and deserved more than what was being made available to us in the multi-state settlement,” state Attorney General Aaron Ford said Monday. Ford, a Democrat, said that had Nevada stayed in the multi-state deal, it would have received $7 million, which he called “woefully insufficient.” The $45 million will be paid in two installments of $23 million in 45 days and $22 million in 120 days. McKinsey said the deal reached with Nevada …