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Finding the Fourth Proportional to 13,176.10, 19,764.15 and 11,863.90

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Solution

The fourth proportional to 13,176.10, 19,764.15 and 11,863.90 is: 17,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.10 : 19,764.15 = 11,863.90 : x
  2. Step 2: Convert to fraction form
    13,176.10/19,764.15 = 11,863.90/x
  3. Step 3: Cross multiply
    13,176.10x = 19,764.15 × 11,863.90
  4. Step 4: Simplify right side
    13,176.10x = 234,479,899.19
  5. Step 5: Solve for x
    x = 234,479,899.19/13,176.10
  6. Step 6: Final answer
    x = 17,795.85

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