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Finding the Third Proportional to 4,712 and 7,936

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Solution

The third proportional to 4,712 and 7,936 is: 13,365.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,712 : 7,936 = 7,936 : x
  2. Step 2: Convert to fraction form
    4,712/7,936 = 7,936/x
  3. Step 3: Cross multiply
    4,712x = 7,936 × 7,936
  4. Step 4: Simplify right side
    4,712x = 62,980,096
  5. Step 5: Solve for x
    x = 62,980,096/4,712
  6. Step 6: Final answer
    x = 13,365.89

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.