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Finding the Third Proportional to 20,928 and 27,504

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Solution

The third proportional to 20,928 and 27,504 is: 36,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928 : 27,504 = 27,504 : x
  2. Step 2: Convert to fraction form
    20,928/27,504 = 27,504/x
  3. Step 3: Cross multiply
    20,928x = 27,504 × 27,504
  4. Step 4: Simplify right side
    20,928x = 756,470,016
  5. Step 5: Solve for x
    x = 756,470,016/20,928
  6. Step 6: Final answer
    x = 36,146.31

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.