A firm wishes to maintain a growth rate of 9 percent and a dividend payout ratio of 68 percent. The ratio of total assets to sales is constant at 1 , and the profit margin is 8.1 percent. If the firm also wishes to maintain a constant debt-equity ratio, what must it be? (Do not round your intermediate calculations.) Multiple Choice 2.19 4.5 6.5 5.5 3.5