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Finding the Fourth Proportional to 132,555.96, 198,847.78 and 42,575.96

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Solution

The fourth proportional to 132,555.96, 198,847.78 and 42,575.96 is: 63,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,555.96 : 198,847.78 = 42,575.96 : x
  2. Step 2: Convert to fraction form
    132,555.96/198,847.78 = 42,575.96/x
  3. Step 3: Cross multiply
    132,555.96x = 198,847.78 × 42,575.96
  4. Step 4: Simplify right side
    132,555.96x = 8,466,135,518.05
  5. Step 5: Solve for x
    x = 8,466,135,518.05/132,555.96
  6. Step 6: Final answer
    x = 63,868.39

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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.