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Finding the Third Proportional to 2,657.25 and 4,137.75

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Solution

The third proportional to 2,657.25 and 4,137.75 is: 6,443.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.25 : 4,137.75 = 4,137.75 : x
  2. Step 2: Convert to fraction form
    2,657.25/4,137.75 = 4,137.75/x
  3. Step 3: Cross multiply
    2,657.25x = 4,137.75 × 4,137.75
  4. Step 4: Simplify right side
    2,657.25x = 17,120,975.06
  5. Step 5: Solve for x
    x = 17,120,975.06/2,657.25
  6. Step 6: Final answer
    x = 6,443.12

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.