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Finding the Fourth Proportional to 25,691.40, 38,537.10 and 25,472.70

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Solution

The fourth proportional to 25,691.40, 38,537.10 and 25,472.70 is: 38,209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.40 : 38,537.10 = 25,472.70 : x
  2. Step 2: Convert to fraction form
    25,691.40/38,537.10 = 25,472.70/x
  3. Step 3: Cross multiply
    25,691.40x = 38,537.10 × 25,472.70
  4. Step 4: Simplify right side
    25,691.40x = 981,643,987.17
  5. Step 5: Solve for x
    x = 981,643,987.17/25,691.40
  6. Step 6: Final answer
    x = 38,209.05

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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.