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Finding the Fourth Proportional to 9.98, 14.90 and 9.44

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Solution

The fourth proportional to 9.98, 14.90 and 9.44 is: 14.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.98 : 14.90 = 9.44 : x
  2. Step 2: Convert to fraction form
    9.98/14.90 = 9.44/x
  3. Step 3: Cross multiply
    9.98x = 14.90 × 9.44
  4. Step 4: Simplify right side
    9.98x = 140.59
  5. Step 5: Solve for x
    x = 140.59/9.98
  6. Step 6: Final answer
    x = 14.09

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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.