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Finding the Fourth Proportional to 9.62, 14.45 and 7.26

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Solution

The fourth proportional to 9.62, 14.45 and 7.26 is: 10.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.62 : 14.45 = 7.26 : x
  2. Step 2: Convert to fraction form
    9.62/14.45 = 7.26/x
  3. Step 3: Cross multiply
    9.62x = 14.45 × 7.26
  4. Step 4: Simplify right side
    9.62x = 104.91
  5. Step 5: Solve for x
    x = 104.91/9.62
  6. Step 6: Final answer
    x = 10.91

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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.