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Finding the Fourth Proportional to 9.94, 14.90 and 7.26

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Solution

The fourth proportional to 9.94, 14.90 and 7.26 is: 10.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.94 : 14.90 = 7.26 : x
  2. Step 2: Convert to fraction form
    9.94/14.90 = 7.26/x
  3. Step 3: Cross multiply
    9.94x = 14.90 × 7.26
  4. Step 4: Simplify right side
    9.94x = 108.17
  5. Step 5: Solve for x
    x = 108.17/9.94
  6. Step 6: Final answer
    x = 10.88

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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.