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Finding the Third Proportional to 194 and 256.25

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Solution

The third proportional to 194 and 256.25 is: 338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    194 : 256.25 = 256.25 : x
  2. Step 2: Convert to fraction form
    194/256.25 = 256.25/x
  3. Step 3: Cross multiply
    194x = 256.25 × 256.25
  4. Step 4: Simplify right side
    194x = 65,664.06
  5. Step 5: Solve for x
    x = 65,664.06/194
  6. Step 6: Final answer
    x = 338.47

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.