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Finding the Third Proportional to 4,047.75 and 8,716.50

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Solution

The third proportional to 4,047.75 and 8,716.50 is: 18,770.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047.75 : 8,716.50 = 8,716.50 : x
  2. Step 2: Convert to fraction form
    4,047.75/8,716.50 = 8,716.50/x
  3. Step 3: Cross multiply
    4,047.75x = 8,716.50 × 8,716.50
  4. Step 4: Simplify right side
    4,047.75x = 75,977,372.25
  5. Step 5: Solve for x
    x = 75,977,372.25/4,047.75
  6. Step 6: Final answer
    x = 18,770.27

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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.