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Finding the Fourth Proportional to 372,124.80, 558,187.20 and 119,404.80

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Solution

The fourth proportional to 372,124.80, 558,187.20 and 119,404.80 is: 179,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,124.80 : 558,187.20 = 119,404.80 : x
  2. Step 2: Convert to fraction form
    372,124.80/558,187.20 = 119,404.80/x
  3. Step 3: Cross multiply
    372,124.80x = 558,187.20 × 119,404.80
  4. Step 4: Simplify right side
    372,124.80x = 66,650,230,978.56
  5. Step 5: Solve for x
    x = 66,650,230,978.56/372,124.80
  6. Step 6: Final answer
    x = 179,107.20

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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.