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Finding the Third Proportional to 4,918 and 7,431

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Solution

The third proportional to 4,918 and 7,431 is: 11,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918 : 7,431 = 7,431 : x
  2. Step 2: Convert to fraction form
    4,918/7,431 = 7,431/x
  3. Step 3: Cross multiply
    4,918x = 7,431 × 7,431
  4. Step 4: Simplify right side
    4,918x = 55,219,761
  5. Step 5: Solve for x
    x = 55,219,761/4,918
  6. Step 6: Final answer
    x = 11,228.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.