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Finding the Third Proportional to 167.50 and 201.50

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Solution

The third proportional to 167.50 and 201.50 is: 242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.50 : 201.50 = 201.50 : x
  2. Step 2: Convert to fraction form
    167.50/201.50 = 201.50/x
  3. Step 3: Cross multiply
    167.50x = 201.50 × 201.50
  4. Step 4: Simplify right side
    167.50x = 40,602.25
  5. Step 5: Solve for x
    x = 40,602.25/167.50
  6. Step 6: Final answer
    x = 242.40

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.