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Finding the Third Proportional to 48,274 and 76,780

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Solution

The third proportional to 48,274 and 76,780 is: 122,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,274 : 76,780 = 76,780 : x
  2. Step 2: Convert to fraction form
    48,274/76,780 = 76,780/x
  3. Step 3: Cross multiply
    48,274x = 76,780 × 76,780
  4. Step 4: Simplify right side
    48,274x = 5,895,168,400
  5. Step 5: Solve for x
    x = 5,895,168,400/48,274
  6. Step 6: Final answer
    x = 122,118.91

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.