The original question appears to be incomplete and nonsensical. Here is a corrected and sensible version:

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Solve for \( x \) in the following proportion:

[tex]\[ \frac{4}{5} = \frac{x}{15} \][/tex]
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Answer :

Of course! Let’s solve the given equation step-by-step:

We are given the proportion:
[tex]\[ \frac{4}{5} = \frac{x}{15} \][/tex]
where we need to find the value of \(x\) such that this proportion holds true.

1. Set up the proportion:
Given:
[tex]\[ \frac{4}{5} = \frac{x}{15} \][/tex]

2. Cross-multiply to solve for \(x\):
This means we will multiply the numerator of one fraction by the denominator of the other fraction:
[tex]\[ 4 \times 15 = 5 \times x \][/tex]
Simplifying this, we get:
[tex]\[ 60 = 5x \][/tex]

3. Solve for \(x\):
To isolate \(x\), we divide both sides of the equation by 5:
[tex]\[ x = \frac{60}{5} \][/tex]
Dividing, we obtain:
[tex]\[ x = 12 \][/tex]

Therefore, the value of \(x\) that makes the proportion true is:
[tex]\[ x = 12 \][/tex]