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Finding the Fourth Proportional to 13,792.80, 20,694.60 and 5,028.60

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Solution

The fourth proportional to 13,792.80, 20,694.60 and 5,028.60 is: 7,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.80 : 20,694.60 = 5,028.60 : x
  2. Step 2: Convert to fraction form
    13,792.80/20,694.60 = 5,028.60/x
  3. Step 3: Cross multiply
    13,792.80x = 20,694.60 × 5,028.60
  4. Step 4: Simplify right side
    13,792.80x = 104,064,865.56
  5. Step 5: Solve for x
    x = 104,064,865.56/13,792.80
  6. Step 6: Final answer
    x = 7,544.87

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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.