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Finding the Fourth Proportional to 218,847.60, 328,306.38 and 92,489.04

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Solution

The fourth proportional to 218,847.60, 328,306.38 and 92,489.04 is: 138,748.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,847.60 : 328,306.38 = 92,489.04 : x
  2. Step 2: Convert to fraction form
    218,847.60/328,306.38 = 92,489.04/x
  3. Step 3: Cross multiply
    218,847.60x = 328,306.38 × 92,489.04
  4. Step 4: Simplify right side
    218,847.60x = 30,364,741,912.08
  5. Step 5: Solve for x
    x = 30,364,741,912.08/218,847.60
  6. Step 6: Final answer
    x = 138,748.34

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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.