Problem $4-21$ Growth and Debt$-$Equity Ratio $($LO$4)$

A firm wishes to maintain a growth rate of $13\mathrm{.}4\%$ and a dividend payout ratio of $38\%.$ The ratio of total assets to sales is constant at

$0\mathrm{.}80,$ and profit margin is $8\mathrm{.}1\%.$

If the firm also wishes to maintain a constant debt$-$equity ratio, what must it be$?($Do not round your intermediate calculations. Round

your final answer to $2$ decimal places.$)$

Debt$-$equity ratio