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Finding the Third Proportional to 751.25 and 1,005

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Solution

The third proportional to 751.25 and 1,005 is: 1,344.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.25 : 1,005 = 1,005 : x
  2. Step 2: Convert to fraction form
    751.25/1,005 = 1,005/x
  3. Step 3: Cross multiply
    751.25x = 1,005 × 1,005
  4. Step 4: Simplify right side
    751.25x = 1,010,025
  5. Step 5: Solve for x
    x = 1,010,025/751.25
  6. Step 6: Final answer
    x = 1,344.46

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.