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Finding the Third Proportional to 928.75 and 2,216

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Solution

The third proportional to 928.75 and 2,216 is: 5,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.75 : 2,216 = 2,216 : x
  2. Step 2: Convert to fraction form
    928.75/2,216 = 2,216/x
  3. Step 3: Cross multiply
    928.75x = 2,216 × 2,216
  4. Step 4: Simplify right side
    928.75x = 4,910,656
  5. Step 5: Solve for x
    x = 4,910,656/928.75
  6. Step 6: Final answer
    x = 5,287.38

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.