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Finding the Fourth Proportional to 159,996.65, 220,766.51 and 103,375.22

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Solution

The fourth proportional to 159,996.65, 220,766.51 and 103,375.22 is: 142,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,996.65 : 220,766.51 = 103,375.22 : x
  2. Step 2: Convert to fraction form
    159,996.65/220,766.51 = 103,375.22/x
  3. Step 3: Cross multiply
    159,996.65x = 220,766.51 × 103,375.22
  4. Step 4: Simplify right side
    159,996.65x = 22,821,784,919.17
  5. Step 5: Solve for x
    x = 22,821,784,919.17/159,996.65
  6. Step 6: Final answer
    x = 142,639.15

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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.