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Finding the Third Proportional to 5,431.50 and 11,247.75

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Solution

The third proportional to 5,431.50 and 11,247.75 is: 23,292.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.50 : 11,247.75 = 11,247.75 : x
  2. Step 2: Convert to fraction form
    5,431.50/11,247.75 = 11,247.75/x
  3. Step 3: Cross multiply
    5,431.50x = 11,247.75 × 11,247.75
  4. Step 4: Simplify right side
    5,431.50x = 126,511,880.06
  5. Step 5: Solve for x
    x = 126,511,880.06/5,431.50
  6. Step 6: Final answer
    x = 23,292.25

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.