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Finding the Third Proportional to 2,491.70 and 5,339.36

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Solution

The third proportional to 2,491.70 and 5,339.36 is: 11,441.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.70 : 5,339.36 = 5,339.36 : x
  2. Step 2: Convert to fraction form
    2,491.70/5,339.36 = 5,339.36/x
  3. Step 3: Cross multiply
    2,491.70x = 5,339.36 × 5,339.36
  4. Step 4: Simplify right side
    2,491.70x = 28,508,716.82
  5. Step 5: Solve for x
    x = 28,508,716.82/2,491.70
  6. Step 6: Final answer
    x = 11,441.48

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.