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Finding the Fourth Proportional to 194.16, 268.08 and 124.24

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Solution

The fourth proportional to 194.16, 268.08 and 124.24 is: 171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.16 : 268.08 = 124.24 : x
  2. Step 2: Convert to fraction form
    194.16/268.08 = 124.24/x
  3. Step 3: Cross multiply
    194.16x = 268.08 × 124.24
  4. Step 4: Simplify right side
    194.16x = 33,306.26
  5. Step 5: Solve for x
    x = 33,306.26/194.16
  6. Step 6: Final answer
    x = 171.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.