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Finding the Fourth Proportional to 392,452.80, 588,679.20 and 168,066.60

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Solution

The fourth proportional to 392,452.80, 588,679.20 and 168,066.60 is: 252,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,452.80 : 588,679.20 = 168,066.60 : x
  2. Step 2: Convert to fraction form
    392,452.80/588,679.20 = 168,066.60/x
  3. Step 3: Cross multiply
    392,452.80x = 588,679.20 × 168,066.60
  4. Step 4: Simplify right side
    392,452.80x = 98,937,311,634.72
  5. Step 5: Solve for x
    x = 98,937,311,634.72/392,452.80
  6. Step 6: Final answer
    x = 252,099.90

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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.