Tokyo stocks extended their winning streak to four trading days on Thursday, boosted by hopes of interest rate cuts in the United States and Japan’s stronger-than-expected gross domestic product growth. The 225-issue Nikkei Stock Average ended up 284.21 points, or 0.78 percent, from Wednesday at 36,726.64. The broader Topix index finished 18.85 points, or 0.73 percent, higher at 2,600.75. On the top-tier Prime Market, gainers were led by bank, securities house, and oil and coal product issues. The U.S. dollar briefly rose to the upper 147 yen zone in the morning but retreated to the lower 147 …