Quantitative Problem: You are holding a portfolio with the following investments and betas: Dollar investment Beta Stock 1.2 $300,000 A 1.5 100,000 B 0.75 300,000 C -0.25 300,000 D $1,000,000 Total investment The market's required return is 10% and the risk-free rate is 3%. What is the portfolio's required return? Round your answer to 3 decimal places. Do not round intermediate calculations. %