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Finding the Fourth Proportional to 415,229.80, 622,614.30 and 178,532.20

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Solution

The fourth proportional to 415,229.80, 622,614.30 and 178,532.20 is: 267,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,229.80 : 622,614.30 = 178,532.20 : x
  2. Step 2: Convert to fraction form
    415,229.80/622,614.30 = 178,532.20/x
  3. Step 3: Cross multiply
    415,229.80x = 622,614.30 × 178,532.20
  4. Step 4: Simplify right side
    415,229.80x = 111,156,700,730.46
  5. Step 5: Solve for x
    x = 111,156,700,730.46/415,229.80
  6. Step 6: Final answer
    x = 267,699.24

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1.5x scale

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.