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Finding the Third Proportional to 83,904 and 124,720

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Solution

The third proportional to 83,904 and 124,720 is: 185,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,904 : 124,720 = 124,720 : x
  2. Step 2: Convert to fraction form
    83,904/124,720 = 124,720/x
  3. Step 3: Cross multiply
    83,904x = 124,720 × 124,720
  4. Step 4: Simplify right side
    83,904x = 15,555,078,400
  5. Step 5: Solve for x
    x = 15,555,078,400/83,904
  6. Step 6: Final answer
    x = 185,391.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.