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Finding the Fourth Proportional to 74,358.92, 102,220.71 and 63,972.71

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Solution

The fourth proportional to 74,358.92, 102,220.71 and 63,972.71 is: 87,942.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,358.92 : 102,220.71 = 63,972.71 : x
  2. Step 2: Convert to fraction form
    74,358.92/102,220.71 = 63,972.71/x
  3. Step 3: Cross multiply
    74,358.92x = 102,220.71 × 63,972.71
  4. Step 4: Simplify right side
    74,358.92x = 6,539,335,836.82
  5. Step 5: Solve for x
    x = 6,539,335,836.82/74,358.92
  6. Step 6: Final answer
    x = 87,942.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.