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Finding the Third Proportional to 7,564.50 and 11,742.75

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Solution

The third proportional to 7,564.50 and 11,742.75 is: 18,228.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,564.50 : 11,742.75 = 11,742.75 : x
  2. Step 2: Convert to fraction form
    7,564.50/11,742.75 = 11,742.75/x
  3. Step 3: Cross multiply
    7,564.50x = 11,742.75 × 11,742.75
  4. Step 4: Simplify right side
    7,564.50x = 137,892,177.56
  5. Step 5: Solve for x
    x = 137,892,177.56/7,564.50
  6. Step 6: Final answer
    x = 18,228.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.