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Finding the Fourth Proportional to 198,500.88, 297,750.60 and 86,166.44

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Solution

The fourth proportional to 198,500.88, 297,750.60 and 86,166.44 is: 129,249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,500.88 : 297,750.60 = 86,166.44 : x
  2. Step 2: Convert to fraction form
    198,500.88/297,750.60 = 86,166.44/x
  3. Step 3: Cross multiply
    198,500.88x = 297,750.60 × 86,166.44
  4. Step 4: Simplify right side
    198,500.88x = 25,656,107,721.11
  5. Step 5: Solve for x
    x = 25,656,107,721.11/198,500.88
  6. Step 6: Final answer
    x = 129,249.34

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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.