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Finding the Third Proportional to 5,392 and 7,664

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Solution

The third proportional to 5,392 and 7,664 is: 10,893.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392 : 7,664 = 7,664 : x
  2. Step 2: Convert to fraction form
    5,392/7,664 = 7,664/x
  3. Step 3: Cross multiply
    5,392x = 7,664 × 7,664
  4. Step 4: Simplify right side
    5,392x = 58,736,896
  5. Step 5: Solve for x
    x = 58,736,896/5,392
  6. Step 6: Final answer
    x = 10,893.34

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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.