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Finding the Third Proportional to 27,988 and 61,112

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Solution

The third proportional to 27,988 and 61,112 is: 133,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988 : 61,112 = 61,112 : x
  2. Step 2: Convert to fraction form
    27,988/61,112 = 61,112/x
  3. Step 3: Cross multiply
    27,988x = 61,112 × 61,112
  4. Step 4: Simplify right side
    27,988x = 3,734,676,544
  5. Step 5: Solve for x
    x = 3,734,676,544/27,988
  6. Step 6: Final answer
    x = 133,438.49

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.