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Finding the Third Proportional to 4,912 and 5,392

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Solution

The third proportional to 4,912 and 5,392 is: 5,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912 : 5,392 = 5,392 : x
  2. Step 2: Convert to fraction form
    4,912/5,392 = 5,392/x
  3. Step 3: Cross multiply
    4,912x = 5,392 × 5,392
  4. Step 4: Simplify right side
    4,912x = 29,073,664
  5. Step 5: Solve for x
    x = 29,073,664/4,912
  6. Step 6: Final answer
    x = 5,918.91

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.