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Finding the Fourth Proportional to 625,886.27, 863,723.29 and 339,406.28

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Solution

The fourth proportional to 625,886.27, 863,723.29 and 339,406.28 is: 468,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,886.27 : 863,723.29 = 339,406.28 : x
  2. Step 2: Convert to fraction form
    625,886.27/863,723.29 = 339,406.28/x
  3. Step 3: Cross multiply
    625,886.27x = 863,723.29 × 339,406.28
  4. Step 4: Simplify right side
    625,886.27x = 293,153,109,270.54
  5. Step 5: Solve for x
    x = 293,153,109,270.54/625,886.27
  6. Step 6: Final answer
    x = 468,380.79

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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.