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Finding the Fourth Proportional to 372,874.80, 558,631.80 and 214,633.20

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Solution

The fourth proportional to 372,874.80, 558,631.80 and 214,633.20 is: 321,558.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,874.80 : 558,631.80 = 214,633.20 : x
  2. Step 2: Convert to fraction form
    372,874.80/558,631.80 = 214,633.20/x
  3. Step 3: Cross multiply
    372,874.80x = 558,631.80 × 214,633.20
  4. Step 4: Simplify right side
    372,874.80x = 119,900,930,855.76
  5. Step 5: Solve for x
    x = 119,900,930,855.76/372,874.80
  6. Step 6: Final answer
    x = 321,558.15

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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.