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Finding the Fourth Proportional to 321,676.20, 482,859.90 and 181,708.20

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Solution

The fourth proportional to 321,676.20, 482,859.90 and 181,708.20 is: 272,757.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,676.20 : 482,859.90 = 181,708.20 : x
  2. Step 2: Convert to fraction form
    321,676.20/482,859.90 = 181,708.20/x
  3. Step 3: Cross multiply
    321,676.20x = 482,859.90 × 181,708.20
  4. Step 4: Simplify right side
    321,676.20x = 87,739,603,281.18
  5. Step 5: Solve for x
    x = 87,739,603,281.18/321,676.20
  6. Step 6: Final answer
    x = 272,757.52

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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.