The condensed income statements through operating income for Amazon.com, Inc. (AMZN), Best Buy Co., Inc. (BBY), and Wal-Mart Stores, Inc. (WMT), for a recent fiscal year follow (in millions):

1. Prepare comparative common-sized income statements for each company. Round percentages to one decimal place.
2. Use the common-sized analysis to compare the financial performance of the three companies.

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Best Buy $ 39,403 (29,963) $ 9,440 (7,547) (39) $ 1,854 Wal-Mart Amazon $135,987 (88,265) $ 47,722 (43,369) (167) $ 4,186 Sales of sales Gross profit Selling, general, and administrative expenses Operating expenses Operating income $ 485,873 (361,256) $ 124,617 (101,853) $ 22,764