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Finding the Third Proportional to 161 and 386.50

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Solution

The third proportional to 161 and 386.50 is: 927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    161 : 386.50 = 386.50 : x
  2. Step 2: Convert to fraction form
    161/386.50 = 386.50/x
  3. Step 3: Cross multiply
    161x = 386.50 × 386.50
  4. Step 4: Simplify right side
    161x = 149,382.25
  5. Step 5: Solve for x
    x = 149,382.25/161
  6. Step 6: Final answer
    x = 927.84

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These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.