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Finding the Third Proportional to 167.50 and 260.50

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Solution

The third proportional to 167.50 and 260.50 is: 405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.50 : 260.50 = 260.50 : x
  2. Step 2: Convert to fraction form
    167.50/260.50 = 260.50/x
  3. Step 3: Cross multiply
    167.50x = 260.50 × 260.50
  4. Step 4: Simplify right side
    167.50x = 67,860.25
  5. Step 5: Solve for x
    x = 67,860.25/167.50
  6. Step 6: Final answer
    x = 405.14

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.