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Finding the Fourth Proportional to 87,801, 121,166.24 and 47,515.61

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Solution

The fourth proportional to 87,801, 121,166.24 and 47,515.61 is: 65,572.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,801 : 121,166.24 = 47,515.61 : x
  2. Step 2: Convert to fraction form
    87,801/121,166.24 = 47,515.61/x
  3. Step 3: Cross multiply
    87,801x = 121,166.24 × 47,515.61
  4. Step 4: Simplify right side
    87,801x = 5,757,286,961.60
  5. Step 5: Solve for x
    x = 5,757,286,961.60/87,801
  6. Step 6: Final answer
    x = 65,572.00

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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.