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Finding the Fourth Proportional to 132,555.68, 198,847.28 and 42,575.64

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Solution

The fourth proportional to 132,555.68, 198,847.28 and 42,575.64 is: 63,867.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,555.68 : 198,847.28 = 42,575.64 : x
  2. Step 2: Convert to fraction form
    132,555.68/198,847.28 = 42,575.64/x
  3. Step 3: Cross multiply
    132,555.68x = 198,847.28 × 42,575.64
  4. Step 4: Simplify right side
    132,555.68x = 8,466,050,208.26
  5. Step 5: Solve for x
    x = 8,466,050,208.26/132,555.68
  6. Step 6: Final answer
    x = 63,867.88

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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.