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Finding the Fourth Proportional to 65,333.92, 90,005.52 and 62,171.68

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Solution

The fourth proportional to 65,333.92, 90,005.52 and 62,171.68 is: 85,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,333.92 : 90,005.52 = 62,171.68 : x
  2. Step 2: Convert to fraction form
    65,333.92/90,005.52 = 62,171.68/x
  3. Step 3: Cross multiply
    65,333.92x = 90,005.52 × 62,171.68
  4. Step 4: Simplify right side
    65,333.92x = 5,595,794,387.67
  5. Step 5: Solve for x
    x = 5,595,794,387.67/65,333.92
  6. Step 6: Final answer
    x = 85,649.15

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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.