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Finding the Fourth Proportional to 61,572.68, 84,930.90 and 42,702.92

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Solution

The fourth proportional to 61,572.68, 84,930.90 and 42,702.92 is: 58,902.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,572.68 : 84,930.90 = 42,702.92 : x
  2. Step 2: Convert to fraction form
    61,572.68/84,930.90 = 42,702.92/x
  3. Step 3: Cross multiply
    61,572.68x = 84,930.90 × 42,702.92
  4. Step 4: Simplify right side
    61,572.68x = 3,626,797,428.23
  5. Step 5: Solve for x
    x = 3,626,797,428.23/61,572.68
  6. Step 6: Final answer
    x = 58,902.71

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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.