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Finding the Third Proportional to 107.81 and 179.06

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Solution

The third proportional to 107.81 and 179.06 is: 297.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.81 : 179.06 = 179.06 : x
  2. Step 2: Convert to fraction form
    107.81/179.06 = 179.06/x
  3. Step 3: Cross multiply
    107.81x = 179.06 × 179.06
  4. Step 4: Simplify right side
    107.81x = 32,063.38
  5. Step 5: Solve for x
    x = 32,063.38/107.81
  6. Step 6: Final answer
    x = 297.40

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.