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Finding the Fourth Proportional to 198,191.83, 297,333.17 and 85,890.90

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Solution

The fourth proportional to 198,191.83, 297,333.17 and 85,890.90 is: 128,856.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,191.83 : 297,333.17 = 85,890.90 : x
  2. Step 2: Convert to fraction form
    198,191.83/297,333.17 = 85,890.90/x
  3. Step 3: Cross multiply
    198,191.83x = 297,333.17 × 85,890.90
  4. Step 4: Simplify right side
    198,191.83x = 25,538,213,785.88
  5. Step 5: Solve for x
    x = 25,538,213,785.88/198,191.83
  6. Step 6: Final answer
    x = 128,856.04

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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.