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Finding the Third Proportional to 91.94 and 98.38

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Solution

The third proportional to 91.94 and 98.38 is: 105.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.94 : 98.38 = 98.38 : x
  2. Step 2: Convert to fraction form
    91.94/98.38 = 98.38/x
  3. Step 3: Cross multiply
    91.94x = 98.38 × 98.38
  4. Step 4: Simplify right side
    91.94x = 9,677.64
  5. Step 5: Solve for x
    x = 9,677.64/91.94
  6. Step 6: Final answer
    x = 105.26

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.