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Finding the Fourth Proportional to 132,605.40, 198,689.40 and 113,797.20

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Solution

The fourth proportional to 132,605.40, 198,689.40 and 113,797.20 is: 170,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,605.40 : 198,689.40 = 113,797.20 : x
  2. Step 2: Convert to fraction form
    132,605.40/198,689.40 = 113,797.20/x
  3. Step 3: Cross multiply
    132,605.40x = 198,689.40 × 113,797.20
  4. Step 4: Simplify right side
    132,605.40x = 22,610,297,389.68
  5. Step 5: Solve for x
    x = 22,610,297,389.68/132,605.40
  6. Step 6: Final answer
    x = 170,508.12

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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.