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Finding the Fourth Proportional to 625,188.78, 862,761.81 and 338,708.86

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Solution

The fourth proportional to 625,188.78, 862,761.81 and 338,708.86 is: 467,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,188.78 : 862,761.81 = 338,708.86 : x
  2. Step 2: Convert to fraction form
    625,188.78/862,761.81 = 338,708.86/x
  3. Step 3: Cross multiply
    625,188.78x = 862,761.81 × 338,708.86
  4. Step 4: Simplify right side
    625,188.78x = 292,225,068,229.89
  5. Step 5: Solve for x
    x = 292,225,068,229.89/625,188.78
  6. Step 6: Final answer
    x = 467,418.93

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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.