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Finding the Fourth Proportional to 9,942.76, 14,912.52 and 3,368.80

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Solution

The fourth proportional to 9,942.76, 14,912.52 and 3,368.80 is: 5,052.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,942.76 : 14,912.52 = 3,368.80 : x
  2. Step 2: Convert to fraction form
    9,942.76/14,912.52 = 3,368.80/x
  3. Step 3: Cross multiply
    9,942.76x = 14,912.52 × 3,368.80
  4. Step 4: Simplify right side
    9,942.76x = 50,237,297.38
  5. Step 5: Solve for x
    x = 50,237,297.38/9,942.76
  6. Step 6: Final answer
    x = 5,052.65

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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.