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Finding the Fourth Proportional to 132,859.62, 198,854.19 and 72,796.50

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Solution

The fourth proportional to 132,859.62, 198,854.19 and 72,796.50 is: 108,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,859.62 : 198,854.19 = 72,796.50 : x
  2. Step 2: Convert to fraction form
    132,859.62/198,854.19 = 72,796.50/x
  3. Step 3: Cross multiply
    132,859.62x = 198,854.19 × 72,796.50
  4. Step 4: Simplify right side
    132,859.62x = 14,475,889,042.34
  5. Step 5: Solve for x
    x = 14,475,889,042.34/132,859.62
  6. Step 6: Final answer
    x = 108,956.27

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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.