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Finding the Third Proportional to 988.50 and 2,667

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Solution

The third proportional to 988.50 and 2,667 is: 7,195.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.50 : 2,667 = 2,667 : x
  2. Step 2: Convert to fraction form
    988.50/2,667 = 2,667/x
  3. Step 3: Cross multiply
    988.50x = 2,667 × 2,667
  4. Step 4: Simplify right side
    988.50x = 7,112,889
  5. Step 5: Solve for x
    x = 7,112,889/988.50
  6. Step 6: Final answer
    x = 7,195.64

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.