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Finding the Fourth Proportional to 98,100.52, 135,337.42 and 61,737.55

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Solution

The fourth proportional to 98,100.52, 135,337.42 and 61,737.55 is: 85,171.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,100.52 : 135,337.42 = 61,737.55 : x
  2. Step 2: Convert to fraction form
    98,100.52/135,337.42 = 61,737.55/x
  3. Step 3: Cross multiply
    98,100.52x = 135,337.42 × 61,737.55
  4. Step 4: Simplify right side
    98,100.52x = 8,355,399,748.75
  5. Step 5: Solve for x
    x = 8,355,399,748.75/98,100.52
  6. Step 6: Final answer
    x = 85,171.82

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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.