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Finding the Fourth Proportional to 625,259.16, 862,856.46 and 338,787

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Solution

The fourth proportional to 625,259.16, 862,856.46 and 338,787 is: 467,525.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,259.16 : 862,856.46 = 338,787 : x
  2. Step 2: Convert to fraction form
    625,259.16/862,856.46 = 338,787/x
  3. Step 3: Cross multiply
    625,259.16x = 862,856.46 × 338,787
  4. Step 4: Simplify right side
    625,259.16x = 292,324,551,514.02
  5. Step 5: Solve for x
    x = 292,324,551,514.02/625,259.16
  6. Step 6: Final answer
    x = 467,525.42

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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.