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Finding the Fourth Proportional to 132,190.71, 198,293.37 and 85,738.83

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Solution

The fourth proportional to 132,190.71, 198,293.37 and 85,738.83 is: 128,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,190.71 : 198,293.37 = 85,738.83 : x
  2. Step 2: Convert to fraction form
    132,190.71/198,293.37 = 85,738.83/x
  3. Step 3: Cross multiply
    132,190.71x = 198,293.37 × 85,738.83
  4. Step 4: Simplify right side
    132,190.71x = 17,001,441,540.56
  5. Step 5: Solve for x
    x = 17,001,441,540.56/132,190.71
  6. Step 6: Final answer
    x = 128,612.98

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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.