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Finding the Third Proportional to 667 and 1,035.50

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Solution

The third proportional to 667 and 1,035.50 is: 1,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    667 : 1,035.50 = 1,035.50 : x
  2. Step 2: Convert to fraction form
    667/1,035.50 = 1,035.50/x
  3. Step 3: Cross multiply
    667x = 1,035.50 × 1,035.50
  4. Step 4: Simplify right side
    667x = 1,072,260.25
  5. Step 5: Solve for x
    x = 1,072,260.25/667
  6. Step 6: Final answer
    x = 1,607.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.