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Finding the Fourth Proportional to 321,191.28, 443,230.92 and 177,957.36

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Solution

The fourth proportional to 321,191.28, 443,230.92 and 177,957.36 is: 245,573.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,191.28 : 443,230.92 = 177,957.36 : x
  2. Step 2: Convert to fraction form
    321,191.28/443,230.92 = 177,957.36/x
  3. Step 3: Cross multiply
    321,191.28x = 443,230.92 × 177,957.36
  4. Step 4: Simplify right side
    321,191.28x = 78,876,204,393.57
  5. Step 5: Solve for x
    x = 78,876,204,393.57/321,191.28
  6. Step 6: Final answer
    x = 245,573.93

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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.