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Finding the Third Proportional to 19,930 and 43,856

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Solution

The third proportional to 19,930 and 43,856 is: 96,505.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930 : 43,856 = 43,856 : x
  2. Step 2: Convert to fraction form
    19,930/43,856 = 43,856/x
  3. Step 3: Cross multiply
    19,930x = 43,856 × 43,856
  4. Step 4: Simplify right side
    19,930x = 1,923,348,736
  5. Step 5: Solve for x
    x = 1,923,348,736/19,930
  6. Step 6: Final answer
    x = 96,505.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.