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Finding the Fourth Proportional to 52,674.20, 78,819.30 and 38,850.20

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Solution

The fourth proportional to 52,674.20, 78,819.30 and 38,850.20 is: 58,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,674.20 : 78,819.30 = 38,850.20 : x
  2. Step 2: Convert to fraction form
    52,674.20/78,819.30 = 38,850.20/x
  3. Step 3: Cross multiply
    52,674.20x = 78,819.30 × 38,850.20
  4. Step 4: Simplify right side
    52,674.20x = 3,062,145,568.86
  5. Step 5: Solve for x
    x = 3,062,145,568.86/52,674.20
  6. Step 6: Final answer
    x = 58,133.69

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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.