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Finding the Third Proportional to 3,237.75 and 6,987

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Solution

The third proportional to 3,237.75 and 6,987 is: 15,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,237.75 : 6,987 = 6,987 : x
  2. Step 2: Convert to fraction form
    3,237.75/6,987 = 6,987/x
  3. Step 3: Cross multiply
    3,237.75x = 6,987 × 6,987
  4. Step 4: Simplify right side
    3,237.75x = 48,818,169
  5. Step 5: Solve for x
    x = 48,818,169/3,237.75
  6. Step 6: Final answer
    x = 15,077.81

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.