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Finding the Third Proportional to 4,984 and 7,718

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Solution

The third proportional to 4,984 and 7,718 is: 11,951.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984 : 7,718 = 7,718 : x
  2. Step 2: Convert to fraction form
    4,984/7,718 = 7,718/x
  3. Step 3: Cross multiply
    4,984x = 7,718 × 7,718
  4. Step 4: Simplify right side
    4,984x = 59,567,524
  5. Step 5: Solve for x
    x = 59,567,524/4,984
  6. Step 6: Final answer
    x = 11,951.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.