Quantitative Problem: You are holding a portfolio with the following investments and betas: Stock Dollar investment Beta A $300,000 1.30 B 150,000 1.60 C 500,000 0.70 D 50,000 -0.35 Total investment $1,000,000 The market's required return is 9% and the risk-free rate is 3%. What is the portfolio's required return? Do not round intermediate calculations. Round your answer to three decimal places. %