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Finding the Fourth Proportional to 372,645.43, 558,956.21 and 156,618.59

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Solution

The fourth proportional to 372,645.43, 558,956.21 and 156,618.59 is: 234,922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,645.43 : 558,956.21 = 156,618.59 : x
  2. Step 2: Convert to fraction form
    372,645.43/558,956.21 = 156,618.59/x
  3. Step 3: Cross multiply
    372,645.43x = 558,956.21 × 156,618.59
  4. Step 4: Simplify right side
    372,645.43x = 87,542,929,904.07
  5. Step 5: Solve for x
    x = 87,542,929,904.07/372,645.43
  6. Step 6: Final answer
    x = 234,922.86

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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.