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Finding the Third Proportional to 18,472 and 27,902

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Solution

The third proportional to 18,472 and 27,902 is: 42,146.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472 : 27,902 = 27,902 : x
  2. Step 2: Convert to fraction form
    18,472/27,902 = 27,902/x
  3. Step 3: Cross multiply
    18,472x = 27,902 × 27,902
  4. Step 4: Simplify right side
    18,472x = 778,521,604
  5. Step 5: Solve for x
    x = 778,521,604/18,472
  6. Step 6: Final answer
    x = 42,146.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.