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Finding the Fourth Proportional to 9.53, 14.21 and 9.24

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Solution

The fourth proportional to 9.53, 14.21 and 9.24 is: 13.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.53 : 14.21 = 9.24 : x
  2. Step 2: Convert to fraction form
    9.53/14.21 = 9.24/x
  3. Step 3: Cross multiply
    9.53x = 14.21 × 9.24
  4. Step 4: Simplify right side
    9.53x = 131.25
  5. Step 5: Solve for x
    x = 131.25/9.53
  6. Step 6: Final answer
    x = 13.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.