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Finding the Third Proportional to 5,978 and 9,219

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Solution

The third proportional to 5,978 and 9,219 is: 14,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978 : 9,219 = 9,219 : x
  2. Step 2: Convert to fraction form
    5,978/9,219 = 9,219/x
  3. Step 3: Cross multiply
    5,978x = 9,219 × 9,219
  4. Step 4: Simplify right side
    5,978x = 84,989,961
  5. Step 5: Solve for x
    x = 84,989,961/5,978
  6. Step 6: Final answer
    x = 14,217.12

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.