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Finding the Fourth Proportional to 625,154.20, 862,712.71 and 338,674.21

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Solution

The fourth proportional to 625,154.20, 862,712.71 and 338,674.21 is: 467,370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,154.20 : 862,712.71 = 338,674.21 : x
  2. Step 2: Convert to fraction form
    625,154.20/862,712.71 = 338,674.21/x
  3. Step 3: Cross multiply
    625,154.20x = 862,712.71 × 338,674.21
  4. Step 4: Simplify right side
    625,154.20x = 292,178,542,512.74
  5. Step 5: Solve for x
    x = 292,178,542,512.74/625,154.20
  6. Step 6: Final answer
    x = 467,370.36

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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.