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Finding the Third Proportional to 188.44 and 419.91

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Solution

The third proportional to 188.44 and 419.91 is: 935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.44 : 419.91 = 419.91 : x
  2. Step 2: Convert to fraction form
    188.44/419.91 = 419.91/x
  3. Step 3: Cross multiply
    188.44x = 419.91 × 419.91
  4. Step 4: Simplify right side
    188.44x = 176,321.26
  5. Step 5: Solve for x
    x = 176,321.26/188.44
  6. Step 6: Final answer
    x = 935.70

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.