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Finding the Third Proportional to 4,191.75 and 6,561

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Solution

The third proportional to 4,191.75 and 6,561 is: 10,269.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,191.75 : 6,561 = 6,561 : x
  2. Step 2: Convert to fraction form
    4,191.75/6,561 = 6,561/x
  3. Step 3: Cross multiply
    4,191.75x = 6,561 × 6,561
  4. Step 4: Simplify right side
    4,191.75x = 43,046,721
  5. Step 5: Solve for x
    x = 43,046,721/4,191.75
  6. Step 6: Final answer
    x = 10,269.39

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.