Ramble On Co. wishes to maintain a growth rate of 12.2 percent per year, a debt-equity ratio of 1.9, and a dividend payout ratio of 22 percent. The ratio of total assets to sales is constant at 91. What profit margin must the firm achieve? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Profit margin 4.91 %