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Finding the Third Proportional to 961.25 and 1,399.75

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Solution

The third proportional to 961.25 and 1,399.75 is: 2,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.25 : 1,399.75 = 1,399.75 : x
  2. Step 2: Convert to fraction form
    961.25/1,399.75 = 1,399.75/x
  3. Step 3: Cross multiply
    961.25x = 1,399.75 × 1,399.75
  4. Step 4: Simplify right side
    961.25x = 1,959,300.06
  5. Step 5: Solve for x
    x = 1,959,300.06/961.25
  6. Step 6: Final answer
    x = 2,038.28

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.