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Finding the Fourth Proportional to 92,179.62, 138,160.08 and 81,550.80

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Solution

The fourth proportional to 92,179.62, 138,160.08 and 81,550.80 is: 122,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,179.62 : 138,160.08 = 81,550.80 : x
  2. Step 2: Convert to fraction form
    92,179.62/138,160.08 = 81,550.80/x
  3. Step 3: Cross multiply
    92,179.62x = 138,160.08 × 81,550.80
  4. Step 4: Simplify right side
    92,179.62x = 11,267,065,052.06
  5. Step 5: Solve for x
    x = 11,267,065,052.06/92,179.62
  6. Step 6: Final answer
    x = 122,229.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.