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Finding the Fourth Proportional to 162,909.20, 244,363.80 and 136,665.20

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Solution

The fourth proportional to 162,909.20, 244,363.80 and 136,665.20 is: 204,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,909.20 : 244,363.80 = 136,665.20 : x
  2. Step 2: Convert to fraction form
    162,909.20/244,363.80 = 136,665.20/x
  3. Step 3: Cross multiply
    162,909.20x = 244,363.80 × 136,665.20
  4. Step 4: Simplify right side
    162,909.20x = 33,396,027,599.76
  5. Step 5: Solve for x
    x = 33,396,027,599.76/162,909.20
  6. Step 6: Final answer
    x = 204,997.80

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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.