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Finding the Third Proportional to 70.59 and 105.89

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Solution

The third proportional to 70.59 and 105.89 is: 158.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.59 : 105.89 = 105.89 : x
  2. Step 2: Convert to fraction form
    70.59/105.89 = 105.89/x
  3. Step 3: Cross multiply
    70.59x = 105.89 × 105.89
  4. Step 4: Simplify right side
    70.59x = 11,212.82
  5. Step 5: Solve for x
    x = 11,212.82/70.59
  6. Step 6: Final answer
    x = 158.84

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