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Finding the Third Proportional to 11,623.50 and 21,249

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Solution

The third proportional to 11,623.50 and 21,249 is: 38,845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,623.50 : 21,249 = 21,249 : x
  2. Step 2: Convert to fraction form
    11,623.50/21,249 = 21,249/x
  3. Step 3: Cross multiply
    11,623.50x = 21,249 × 21,249
  4. Step 4: Simplify right side
    11,623.50x = 451,520,001
  5. Step 5: Solve for x
    x = 451,520,001/11,623.50
  6. Step 6: Final answer
    x = 38,845.44

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Why These Related Problems?

These problems maintain the same ratio (1.83) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.