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Finding the Fourth Proportional to 162,781.80, 244,172.70 and 103,659.90

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Solution

The fourth proportional to 162,781.80, 244,172.70 and 103,659.90 is: 155,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,781.80 : 244,172.70 = 103,659.90 : x
  2. Step 2: Convert to fraction form
    162,781.80/244,172.70 = 103,659.90/x
  3. Step 3: Cross multiply
    162,781.80x = 244,172.70 × 103,659.90
  4. Step 4: Simplify right side
    162,781.80x = 25,310,917,664.73
  5. Step 5: Solve for x
    x = 25,310,917,664.73/162,781.80
  6. Step 6: Final answer
    x = 155,489.85

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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.