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Finding the Third Proportional to 47,742 and 103,980

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Solution

The third proportional to 47,742 and 103,980 is: 226,463.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,742 : 103,980 = 103,980 : x
  2. Step 2: Convert to fraction form
    47,742/103,980 = 103,980/x
  3. Step 3: Cross multiply
    47,742x = 103,980 × 103,980
  4. Step 4: Simplify right side
    47,742x = 10,811,840,400
  5. Step 5: Solve for x
    x = 10,811,840,400/47,742
  6. Step 6: Final answer
    x = 226,463.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.