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Finding the Fourth Proportional to 321,227.96, 443,288.02 and 177,987.56

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Solution

The fourth proportional to 321,227.96, 443,288.02 and 177,987.56 is: 245,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,227.96 : 443,288.02 = 177,987.56 : x
  2. Step 2: Convert to fraction form
    321,227.96/443,288.02 = 177,987.56/x
  3. Step 3: Cross multiply
    321,227.96x = 443,288.02 × 177,987.56
  4. Step 4: Simplify right side
    321,227.96x = 78,899,753,057.03
  5. Step 5: Solve for x
    x = 78,899,753,057.03/321,227.96
  6. Step 6: Final answer
    x = 245,619.20

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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.