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Finding the Third Proportional to 251.88 and 552.50

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Solution

The third proportional to 251.88 and 552.50 is: 1,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.88 : 552.50 = 552.50 : x
  2. Step 2: Convert to fraction form
    251.88/552.50 = 552.50/x
  3. Step 3: Cross multiply
    251.88x = 552.50 × 552.50
  4. Step 4: Simplify right side
    251.88x = 305,256.25
  5. Step 5: Solve for x
    x = 305,256.25/251.88
  6. Step 6: Final answer
    x = 1,211.94

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.