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Finding the Third Proportional to 49,721 and 73,609

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Solution

The third proportional to 49,721 and 73,609 is: 108,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,721 : 73,609 = 73,609 : x
  2. Step 2: Convert to fraction form
    49,721/73,609 = 73,609/x
  3. Step 3: Cross multiply
    49,721x = 73,609 × 73,609
  4. Step 4: Simplify right side
    49,721x = 5,418,284,881
  5. Step 5: Solve for x
    x = 5,418,284,881/49,721
  6. Step 6: Final answer
    x = 108,973.77

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.