In a normal distribution, the mean is 50, and the standard deviation is 5. One of the values in the distribution is \( x \), and its z-score is calculated using \( z = \frac{x - \mu}{\sigma} \). If the z-score for this value is \( -1.2 \), find \( x \). Let's think step by step and output the final answer within \boxed{}.
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