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Finding the Third Proportional to 110,890 and 239,988

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Solution

The third proportional to 110,890 and 239,988 is: 519,381.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,890 : 239,988 = 239,988 : x
  2. Step 2: Convert to fraction form
    110,890/239,988 = 239,988/x
  3. Step 3: Cross multiply
    110,890x = 239,988 × 239,988
  4. Step 4: Simplify right side
    110,890x = 57,594,240,144
  5. Step 5: Solve for x
    x = 57,594,240,144/110,890
  6. Step 6: Final answer
    x = 519,381.73

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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.