Explicación paso a paso:
[tex] \frac{4a}{9a} = \frac{12}{x} \\ \frac{4}{9} = \frac{12}{x} \\ 4x = 9 \times 12 \\ x = \frac{9 \times 12}{4} \\ x = 9 \times 3 = 27[/tex]
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Explicación paso a paso:
[tex] \frac{4a}{9a} = \frac{12}{x} \\ \frac{4}{9} = \frac{12}{x} \\ 4x = 9 \times 12 \\ x = \frac{9 \times 12}{4} \\ x = 9 \times 3 = 27[/tex]