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Finding the Fourth Proportional to 159,792.40, 220,508.22 and 88,172.47

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Solution

The fourth proportional to 159,792.40, 220,508.22 and 88,172.47 is: 121,675.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,792.40 : 220,508.22 = 88,172.47 : x
  2. Step 2: Convert to fraction form
    159,792.40/220,508.22 = 88,172.47/x
  3. Step 3: Cross multiply
    159,792.40x = 220,508.22 × 88,172.47
  4. Step 4: Simplify right side
    159,792.40x = 19,442,754,412.70
  5. Step 5: Solve for x
    x = 19,442,754,412.70/159,792.40
  6. Step 6: Final answer
    x = 121,675.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.