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Finding the Third Proportional to 667 and 947.50

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Solution

The third proportional to 667 and 947.50 is: 1,345.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    667 : 947.50 = 947.50 : x
  2. Step 2: Convert to fraction form
    667/947.50 = 947.50/x
  3. Step 3: Cross multiply
    667x = 947.50 × 947.50
  4. Step 4: Simplify right side
    667x = 897,756.25
  5. Step 5: Solve for x
    x = 897,756.25/667
  6. Step 6: Final answer
    x = 1,345.96

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.