I have tried the formula for part 4 of this question with 349200/670000=52.11% and also 52.12%

The stockholders' equity accounts of Ayayai Corp. on January 1. 2022, were as follows. Preferred Stock (7%, $100 per noncumulative, 12,000 shares authorized) $720.000 Common Stock ($4 stated value, 720,000 shares authorized) 2.400,000 Paid-in Capital in Excess of Par Value-Preferred Stock 36.000 Paid-in Capital in Excess of Stated Value-Common Stock 1,152.000 Retained Earnings 1,651.200 Treasury Stock (12,000 common shares) 96,000 During 2022, the corporation had the following transactions and events pertaining to its stockholders' equity. Feb. 1 Issued 12,000 shares of common stock for $72,000. Mar. 20 Purchased 2,400 additional shares of common treasury stock at $7 per share. Oct. 1 Declared a 7% cash dividend on preferred stock, payable November 1. Nov. 1 Paid the dividend declared on October 1. Dec. 1 Declared a $0.50 per share cash dividend to common stockholders of record on December 15, payable December 31, 2 Dec 31 Determined that net income for the year was $670,000. Paid the dividend declared on December 1.