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Finding the Fourth Proportional to 321,099.73, 443,132.21 and 177,859.76

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Solution

The fourth proportional to 321,099.73, 443,132.21 and 177,859.76 is: 245,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,099.73 : 443,132.21 = 177,859.76 : x
  2. Step 2: Convert to fraction form
    321,099.73/443,132.21 = 177,859.76/x
  3. Step 3: Cross multiply
    321,099.73x = 443,132.21 × 177,859.76
  4. Step 4: Simplify right side
    321,099.73x = 78,815,386,747.86
  5. Step 5: Solve for x
    x = 78,815,386,747.86/321,099.73
  6. Step 6: Final answer
    x = 245,454.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.