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Finding the Fourth Proportional to 543,624.20, 814,917.90 and 423,614.60

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Solution

The fourth proportional to 543,624.20, 814,917.90 and 423,614.60 is: 635,017.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,624.20 : 814,917.90 = 423,614.60 : x
  2. Step 2: Convert to fraction form
    543,624.20/814,917.90 = 423,614.60/x
  3. Step 3: Cross multiply
    543,624.20x = 814,917.90 × 423,614.60
  4. Step 4: Simplify right side
    543,624.20x = 345,211,120,241.34
  5. Step 5: Solve for x
    x = 345,211,120,241.34/543,624.20
  6. Step 6: Final answer
    x = 635,017.94

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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.