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Finding the Fourth Proportional to 12,993.56, 17,930.75 and 7,328.26

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Solution

The fourth proportional to 12,993.56, 17,930.75 and 7,328.26 is: 10,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.56 : 17,930.75 = 7,328.26 : x
  2. Step 2: Convert to fraction form
    12,993.56/17,930.75 = 7,328.26/x
  3. Step 3: Cross multiply
    12,993.56x = 17,930.75 × 7,328.26
  4. Step 4: Simplify right side
    12,993.56x = 131,401,198.00
  5. Step 5: Solve for x
    x = 131,401,198.00/12,993.56
  6. Step 6: Final answer
    x = 10,112.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.