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Finding the Third Proportional to 20,190 and 43,160

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Solution

The third proportional to 20,190 and 43,160 is: 92,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190 : 43,160 = 43,160 : x
  2. Step 2: Convert to fraction form
    20,190/43,160 = 43,160/x
  3. Step 3: Cross multiply
    20,190x = 43,160 × 43,160
  4. Step 4: Simplify right side
    20,190x = 1,862,785,600
  5. Step 5: Solve for x
    x = 1,862,785,600/20,190
  6. Step 6: Final answer
    x = 92,262.78

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.