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Finding the Fourth Proportional to 13,808.75, 20,715.84 and 5,042.52

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Solution

The fourth proportional to 13,808.75, 20,715.84 and 5,042.52 is: 7,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.75 : 20,715.84 = 5,042.52 : x
  2. Step 2: Convert to fraction form
    13,808.75/20,715.84 = 5,042.52/x
  3. Step 3: Cross multiply
    13,808.75x = 20,715.84 × 5,042.52
  4. Step 4: Simplify right side
    13,808.75x = 104,460,037.52
  5. Step 5: Solve for x
    x = 104,460,037.52/13,808.75
  6. Step 6: Final answer
    x = 7,564.77

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