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Finding the Third Proportional to 165 and 248.25

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Solution

The third proportional to 165 and 248.25 is: 373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    165 : 248.25 = 248.25 : x
  2. Step 2: Convert to fraction form
    165/248.25 = 248.25/x
  3. Step 3: Cross multiply
    165x = 248.25 × 248.25
  4. Step 4: Simplify right side
    165x = 61,628.06
  5. Step 5: Solve for x
    x = 61,628.06/165
  6. Step 6: Final answer
    x = 373.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.