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Finding the Third Proportional to 5,008 and 7,681

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Solution

The third proportional to 5,008 and 7,681 is: 11,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008 : 7,681 = 7,681 : x
  2. Step 2: Convert to fraction form
    5,008/7,681 = 7,681/x
  3. Step 3: Cross multiply
    5,008x = 7,681 × 7,681
  4. Step 4: Simplify right side
    5,008x = 58,997,761
  5. Step 5: Solve for x
    x = 58,997,761/5,008
  6. Step 6: Final answer
    x = 11,780.70

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.