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Finding the Fourth Proportional to 625,508.56, 863,198.40 and 339,025.60

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Solution

The fourth proportional to 625,508.56, 863,198.40 and 339,025.60 is: 467,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,508.56 : 863,198.40 = 339,025.60 : x
  2. Step 2: Convert to fraction form
    625,508.56/863,198.40 = 339,025.60/x
  3. Step 3: Cross multiply
    625,508.56x = 863,198.40 × 339,025.60
  4. Step 4: Simplify right side
    625,508.56x = 292,646,355,479.04
  5. Step 5: Solve for x
    x = 292,646,355,479.04/625,508.56
  6. Step 6: Final answer
    x = 467,853.48

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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.