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Finding the Third Proportional to 185,872 and 395,720

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Solution

The third proportional to 185,872 and 395,720 is: 842,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,872 : 395,720 = 395,720 : x
  2. Step 2: Convert to fraction form
    185,872/395,720 = 395,720/x
  3. Step 3: Cross multiply
    185,872x = 395,720 × 395,720
  4. Step 4: Simplify right side
    185,872x = 156,594,318,400
  5. Step 5: Solve for x
    x = 156,594,318,400/185,872
  6. Step 6: Final answer
    x = 842,484.71

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.