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Finding the Fourth Proportional to 10.95, 16.42 and 9.26

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Solution

The fourth proportional to 10.95, 16.42 and 9.26 is: 13.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.95 : 16.42 = 9.26 : x
  2. Step 2: Convert to fraction form
    10.95/16.42 = 9.26/x
  3. Step 3: Cross multiply
    10.95x = 16.42 × 9.26
  4. Step 4: Simplify right side
    10.95x = 152.05
  5. Step 5: Solve for x
    x = 152.05/10.95
  6. Step 6: Final answer
    x = 13.89

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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.