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Finding the Fourth Proportional to 61,930.92, 85,632.42 and 60,930.28

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Solution

The fourth proportional to 61,930.92, 85,632.42 and 60,930.28 is: 84,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.92 : 85,632.42 = 60,930.28 : x
  2. Step 2: Convert to fraction form
    61,930.92/85,632.42 = 60,930.28/x
  3. Step 3: Cross multiply
    61,930.92x = 85,632.42 × 60,930.28
  4. Step 4: Simplify right side
    61,930.92x = 5,217,607,327.68
  5. Step 5: Solve for x
    x = 5,217,607,327.68/61,930.92
  6. Step 6: Final answer
    x = 84,248.83

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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.