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Finding the Fourth Proportional to 132,359.70, 198,539.55 and 109,809.30

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Solution

The fourth proportional to 132,359.70, 198,539.55 and 109,809.30 is: 164,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,359.70 : 198,539.55 = 109,809.30 : x
  2. Step 2: Convert to fraction form
    132,359.70/198,539.55 = 109,809.30/x
  3. Step 3: Cross multiply
    132,359.70x = 198,539.55 × 109,809.30
  4. Step 4: Simplify right side
    132,359.70x = 21,801,489,007.82
  5. Step 5: Solve for x
    x = 21,801,489,007.82/132,359.70
  6. Step 6: Final answer
    x = 164,713.95

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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.