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Finding the Third Proportional to 7,378 and 9,581

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Solution

The third proportional to 7,378 and 9,581 is: 12,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378 : 9,581 = 9,581 : x
  2. Step 2: Convert to fraction form
    7,378/9,581 = 9,581/x
  3. Step 3: Cross multiply
    7,378x = 9,581 × 9,581
  4. Step 4: Simplify right side
    7,378x = 91,795,561
  5. Step 5: Solve for x
    x = 91,795,561/7,378
  6. Step 6: Final answer
    x = 12,441.79

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.