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Finding the Fourth Proportional to 37,458.76, 51,691.70 and 21,542.20

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Solution

The fourth proportional to 37,458.76, 51,691.70 and 21,542.20 is: 29,727.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,458.76 : 51,691.70 = 21,542.20 : x
  2. Step 2: Convert to fraction form
    37,458.76/51,691.70 = 21,542.20/x
  3. Step 3: Cross multiply
    37,458.76x = 51,691.70 × 21,542.20
  4. Step 4: Simplify right side
    37,458.76x = 1,113,552,939.74
  5. Step 5: Solve for x
    x = 1,113,552,939.74/37,458.76
  6. Step 6: Final answer
    x = 29,727.44

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.