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Finding the Fourth Proportional to 120,892.17, 166,832.87 and 67,176.21

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Solution

The fourth proportional to 120,892.17, 166,832.87 and 67,176.21 is: 92,704.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,892.17 : 166,832.87 = 67,176.21 : x
  2. Step 2: Convert to fraction form
    120,892.17/166,832.87 = 67,176.21/x
  3. Step 3: Cross multiply
    120,892.17x = 166,832.87 × 67,176.21
  4. Step 4: Simplify right side
    120,892.17x = 11,207,199,910.02
  5. Step 5: Solve for x
    x = 11,207,199,910.02/120,892.17
  6. Step 6: Final answer
    x = 92,704.10

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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.