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Finding the Fourth Proportional to 625,461.30, 863,229.38 and 396,039.96

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Solution

The fourth proportional to 625,461.30, 863,229.38 and 396,039.96 is: 546,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,461.30 : 863,229.38 = 396,039.96 : x
  2. Step 2: Convert to fraction form
    625,461.30/863,229.38 = 396,039.96/x
  3. Step 3: Cross multiply
    625,461.30x = 863,229.38 × 396,039.96
  4. Step 4: Simplify right side
    625,461.30x = 341,873,327,145.83
  5. Step 5: Solve for x
    x = 341,873,327,145.83/625,461.30
  6. Step 6: Final answer
    x = 546,593.89

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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.