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Finding the Third Proportional to 42,374 and 91,718

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Solution

The third proportional to 42,374 and 91,718 is: 198,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,374 : 91,718 = 91,718 : x
  2. Step 2: Convert to fraction form
    42,374/91,718 = 91,718/x
  3. Step 3: Cross multiply
    42,374x = 91,718 × 91,718
  4. Step 4: Simplify right side
    42,374x = 8,412,191,524
  5. Step 5: Solve for x
    x = 8,412,191,524/42,374
  6. Step 6: Final answer
    x = 198,522.48

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.