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Finding the Fourth Proportional to 9,474.70, 14,213.13 and 3,928.72

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Solution

The fourth proportional to 9,474.70, 14,213.13 and 3,928.72 is: 5,893.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,474.70 : 14,213.13 = 3,928.72 : x
  2. Step 2: Convert to fraction form
    9,474.70/14,213.13 = 3,928.72/x
  3. Step 3: Cross multiply
    9,474.70x = 14,213.13 × 3,928.72
  4. Step 4: Simplify right side
    9,474.70x = 55,839,408.09
  5. Step 5: Solve for x
    x = 55,839,408.09/9,474.70
  6. Step 6: Final answer
    x = 5,893.53

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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.