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Finding the Fourth Proportional to 625,198.45, 862,774.71 and 338,718.55

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Solution

The fourth proportional to 625,198.45, 862,774.71 and 338,718.55 is: 467,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,198.45 : 862,774.71 = 338,718.55 : x
  2. Step 2: Convert to fraction form
    625,198.45/862,774.71 = 338,718.55/x
  3. Step 3: Cross multiply
    625,198.45x = 862,774.71 × 338,718.55
  4. Step 4: Simplify right side
    625,198.45x = 292,237,794,434.00
  5. Step 5: Solve for x
    x = 292,237,794,434.00/625,198.45
  6. Step 6: Final answer
    x = 467,432.06

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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.