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Finding the Fourth Proportional to 196.53, 294.59 and 74.67

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Solution

The fourth proportional to 196.53, 294.59 and 74.67 is: 111.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.53 : 294.59 = 74.67 : x
  2. Step 2: Convert to fraction form
    196.53/294.59 = 74.67/x
  3. Step 3: Cross multiply
    196.53x = 294.59 × 74.67
  4. Step 4: Simplify right side
    196.53x = 21,997.35
  5. Step 5: Solve for x
    x = 21,997.35/196.53
  6. Step 6: Final answer
    x = 111.93

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Why These Related Problems?

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