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Finding the Third Proportional to 49,905 and 107,720

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Solution

The third proportional to 49,905 and 107,720 is: 232,513.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,905 : 107,720 = 107,720 : x
  2. Step 2: Convert to fraction form
    49,905/107,720 = 107,720/x
  3. Step 3: Cross multiply
    49,905x = 107,720 × 107,720
  4. Step 4: Simplify right side
    49,905x = 11,603,598,400
  5. Step 5: Solve for x
    x = 11,603,598,400/49,905
  6. Step 6: Final answer
    x = 232,513.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.