Row reduce {{91.5, 82.3, 68.2, 37.9, 50.9}, {22, 33.2, 68, 98.9, 82.7}, {9.7, 18.3, 22.8, 19.9, 20.2}, {12.2, 16.9, 56.8, 96.9, 76.7}}

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