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Finding the Fourth Proportional to 9.64, 14.43 and 6.62

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Solution

The fourth proportional to 9.64, 14.43 and 6.62 is: 9.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.64 : 14.43 = 6.62 : x
  2. Step 2: Convert to fraction form
    9.64/14.43 = 6.62/x
  3. Step 3: Cross multiply
    9.64x = 14.43 × 6.62
  4. Step 4: Simplify right side
    9.64x = 95.53
  5. Step 5: Solve for x
    x = 95.53/9.64
  6. Step 6: Final answer
    x = 9.91

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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.