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Finding the Fourth Proportional to 198,373.92, 297,699.12 and 87,505.44

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Solution

The fourth proportional to 198,373.92, 297,699.12 and 87,505.44 is: 131,319.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,373.92 : 297,699.12 = 87,505.44 : x
  2. Step 2: Convert to fraction form
    198,373.92/297,699.12 = 87,505.44/x
  3. Step 3: Cross multiply
    198,373.92x = 297,699.12 × 87,505.44
  4. Step 4: Simplify right side
    198,373.92x = 26,050,292,483.21
  5. Step 5: Solve for x
    x = 26,050,292,483.21/198,373.92
  6. Step 6: Final answer
    x = 131,319.14

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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.