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Finding the Third Proportional to 2,553.19 and 5,491.13

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Solution

The third proportional to 2,553.19 and 5,491.13 is: 11,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,553.19 : 5,491.13 = 5,491.13 : x
  2. Step 2: Convert to fraction form
    2,553.19/5,491.13 = 5,491.13/x
  3. Step 3: Cross multiply
    2,553.19x = 5,491.13 × 5,491.13
  4. Step 4: Simplify right side
    2,553.19x = 30,152,453.77
  5. Step 5: Solve for x
    x = 30,152,453.77/2,553.19
  6. Step 6: Final answer
    x = 11,809.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.