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Finding the Fourth Proportional to 13,943.49, 20,879.52 and 7,696.57

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Solution

The fourth proportional to 13,943.49, 20,879.52 and 7,696.57 is: 11,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.49 : 20,879.52 = 7,696.57 : x
  2. Step 2: Convert to fraction form
    13,943.49/20,879.52 = 7,696.57/x
  3. Step 3: Cross multiply
    13,943.49x = 20,879.52 × 7,696.57
  4. Step 4: Simplify right side
    13,943.49x = 160,700,688.63
  5. Step 5: Solve for x
    x = 160,700,688.63/13,943.49
  6. Step 6: Final answer
    x = 11,525.14

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.