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Finding the Fourth Proportional to 916.52, 1,374.80 and 232.52

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Solution

The fourth proportional to 916.52, 1,374.80 and 232.52 is: 348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.52 : 1,374.80 = 232.52 : x
  2. Step 2: Convert to fraction form
    916.52/1,374.80 = 232.52/x
  3. Step 3: Cross multiply
    916.52x = 1,374.80 × 232.52
  4. Step 4: Simplify right side
    916.52x = 319,668.50
  5. Step 5: Solve for x
    x = 319,668.50/916.52
  6. Step 6: Final answer
    x = 348.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.