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Finding the Third Proportional to 4,992 and 7,089

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Solution

The third proportional to 4,992 and 7,089 is: 10,066.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992 : 7,089 = 7,089 : x
  2. Step 2: Convert to fraction form
    4,992/7,089 = 7,089/x
  3. Step 3: Cross multiply
    4,992x = 7,089 × 7,089
  4. Step 4: Simplify right side
    4,992x = 50,253,921
  5. Step 5: Solve for x
    x = 50,253,921/4,992
  6. Step 6: Final answer
    x = 10,066.89

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.