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Finding the Fourth Proportional to 156,951.90, 216,593.15 and 85,331.42

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Solution

The fourth proportional to 156,951.90, 216,593.15 and 85,331.42 is: 117,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,951.90 : 216,593.15 = 85,331.42 : x
  2. Step 2: Convert to fraction form
    156,951.90/216,593.15 = 85,331.42/x
  3. Step 3: Cross multiply
    156,951.90x = 216,593.15 × 85,331.42
  4. Step 4: Simplify right side
    156,951.90x = 18,482,201,051.77
  5. Step 5: Solve for x
    x = 18,482,201,051.77/156,951.90
  6. Step 6: Final answer
    x = 117,757.10

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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.