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Finding the Fourth Proportional to 395,620.68, 593,524.36 and 129,380.16

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Solution

The fourth proportional to 395,620.68, 593,524.36 and 129,380.16 is: 194,100.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,620.68 : 593,524.36 = 129,380.16 : x
  2. Step 2: Convert to fraction form
    395,620.68/593,524.36 = 129,380.16/x
  3. Step 3: Cross multiply
    395,620.68x = 593,524.36 × 129,380.16
  4. Step 4: Simplify right side
    395,620.68x = 76,790,276,660.70
  5. Step 5: Solve for x
    x = 76,790,276,660.70/395,620.68
  6. Step 6: Final answer
    x = 194,100.77

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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.