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Finding the Third Proportional to 79,920 and 124,173

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Solution

The third proportional to 79,920 and 124,173 is: 192,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920 : 124,173 = 124,173 : x
  2. Step 2: Convert to fraction form
    79,920/124,173 = 124,173/x
  3. Step 3: Cross multiply
    79,920x = 124,173 × 124,173
  4. Step 4: Simplify right side
    79,920x = 15,418,933,929
  5. Step 5: Solve for x
    x = 15,418,933,929/79,920
  6. Step 6: Final answer
    x = 192,929.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.