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Finding the Third Proportional to 1,116.70 and 2,453.20

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Solution

The third proportional to 1,116.70 and 2,453.20 is: 5,389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.70 : 2,453.20 = 2,453.20 : x
  2. Step 2: Convert to fraction form
    1,116.70/2,453.20 = 2,453.20/x
  3. Step 3: Cross multiply
    1,116.70x = 2,453.20 × 2,453.20
  4. Step 4: Simplify right side
    1,116.70x = 6,018,205.57
  5. Step 5: Solve for x
    x = 6,018,205.57/1,116.70
  6. Step 6: Final answer
    x = 5,389.26

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.