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Finding the Third Proportional to 20,371.50 and 22,639.50

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Solution

The third proportional to 20,371.50 and 22,639.50 is: 25,160.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.50 : 22,639.50 = 22,639.50 : x
  2. Step 2: Convert to fraction form
    20,371.50/22,639.50 = 22,639.50/x
  3. Step 3: Cross multiply
    20,371.50x = 22,639.50 × 22,639.50
  4. Step 4: Simplify right side
    20,371.50x = 512,546,960.25
  5. Step 5: Solve for x
    x = 512,546,960.25/20,371.50
  6. Step 6: Final answer
    x = 25,160.00

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.