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Finding the Third Proportional to 1,225.13 and 3,153.94

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Solution

The third proportional to 1,225.13 and 3,153.94 is: 8,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.13 : 3,153.94 = 3,153.94 : x
  2. Step 2: Convert to fraction form
    1,225.13/3,153.94 = 3,153.94/x
  3. Step 3: Cross multiply
    1,225.13x = 3,153.94 × 3,153.94
  4. Step 4: Simplify right side
    1,225.13x = 9,947,321.75
  5. Step 5: Solve for x
    x = 9,947,321.75/1,225.13
  6. Step 6: Final answer
    x = 8,119.43

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Why These Related Problems?

These problems maintain the same ratio (2.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.