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Finding the Fourth Proportional to 625,259.01, 862,851.78 and 338,778.21

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Solution

The fourth proportional to 625,259.01, 862,851.78 and 338,778.21 is: 467,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,259.01 : 862,851.78 = 338,778.21 : x
  2. Step 2: Convert to fraction form
    625,259.01/862,851.78 = 338,778.21/x
  3. Step 3: Cross multiply
    625,259.01x = 862,851.78 × 338,778.21
  4. Step 4: Simplify right side
    625,259.01x = 292,315,381,523.71
  5. Step 5: Solve for x
    x = 292,315,381,523.71/625,259.01
  6. Step 6: Final answer
    x = 467,510.87

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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.