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Finding the Fourth Proportional to 609,540.80, 914,311.20 and 396,964.40

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Solution

The fourth proportional to 609,540.80, 914,311.20 and 396,964.40 is: 595,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,540.80 : 914,311.20 = 396,964.40 : x
  2. Step 2: Convert to fraction form
    609,540.80/914,311.20 = 396,964.40/x
  3. Step 3: Cross multiply
    609,540.80x = 914,311.20 × 396,964.40
  4. Step 4: Simplify right side
    609,540.80x = 362,948,996,921.28
  5. Step 5: Solve for x
    x = 362,948,996,921.28/609,540.80
  6. Step 6: Final answer
    x = 595,446.60

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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.