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Finding the Third Proportional to 648.75 and 941.50

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Solution

The third proportional to 648.75 and 941.50 is: 1,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.75 : 941.50 = 941.50 : x
  2. Step 2: Convert to fraction form
    648.75/941.50 = 941.50/x
  3. Step 3: Cross multiply
    648.75x = 941.50 × 941.50
  4. Step 4: Simplify right side
    648.75x = 886,422.25
  5. Step 5: Solve for x
    x = 886,422.25/648.75
  6. Step 6: Final answer
    x = 1,366.35

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.