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Finding the Fourth Proportional to 157,089.60, 216,777.17 and 85,469.90

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Solution

The fourth proportional to 157,089.60, 216,777.17 and 85,469.90 is: 117,944.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,089.60 : 216,777.17 = 85,469.90 : x
  2. Step 2: Convert to fraction form
    157,089.60/216,777.17 = 85,469.90/x
  3. Step 3: Cross multiply
    157,089.60x = 216,777.17 × 85,469.90
  4. Step 4: Simplify right side
    157,089.60x = 18,527,923,156.78
  5. Step 5: Solve for x
    x = 18,527,923,156.78/157,089.60
  6. Step 6: Final answer
    x = 117,944.94

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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.