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Finding the Third Proportional to 78.43 and 169.00

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Solution

The third proportional to 78.43 and 169.00 is: 364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78.43 : 169.00 = 169.00 : x
  2. Step 2: Convert to fraction form
    78.43/169.00 = 169.00/x
  3. Step 3: Cross multiply
    78.43x = 169.00 × 169.00
  4. Step 4: Simplify right side
    78.43x = 28,559.68
  5. Step 5: Solve for x
    x = 28,559.68/78.43
  6. Step 6: Final answer
    x = 364.13

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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.