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Finding the Fourth Proportional to 162,489.78, 243,734.70 and 44,178.60

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Solution

The fourth proportional to 162,489.78, 243,734.70 and 44,178.60 is: 66,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,489.78 : 243,734.70 = 44,178.60 : x
  2. Step 2: Convert to fraction form
    162,489.78/243,734.70 = 44,178.60/x
  3. Step 3: Cross multiply
    162,489.78x = 243,734.70 × 44,178.60
  4. Step 4: Simplify right side
    162,489.78x = 10,767,857,817.42
  5. Step 5: Solve for x
    x = 10,767,857,817.42/162,489.78
  6. Step 6: Final answer
    x = 66,267.91

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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.