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Finding the Third Proportional to 4,055.50 and 8,717

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Solution

The third proportional to 4,055.50 and 8,717 is: 18,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,055.50 : 8,717 = 8,717 : x
  2. Step 2: Convert to fraction form
    4,055.50/8,717 = 8,717/x
  3. Step 3: Cross multiply
    4,055.50x = 8,717 × 8,717
  4. Step 4: Simplify right side
    4,055.50x = 75,986,089
  5. Step 5: Solve for x
    x = 75,986,089/4,055.50
  6. Step 6: Final answer
    x = 18,736.55

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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.