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Finding the Fourth Proportional to 19,311.41, 28,976.12 and 6,840.88

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Solution

The fourth proportional to 19,311.41, 28,976.12 and 6,840.88 is: 10,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.41 : 28,976.12 = 6,840.88 : x
  2. Step 2: Convert to fraction form
    19,311.41/28,976.12 = 6,840.88/x
  3. Step 3: Cross multiply
    19,311.41x = 28,976.12 × 6,840.88
  4. Step 4: Simplify right side
    19,311.41x = 198,222,159.79
  5. Step 5: Solve for x
    x = 198,222,159.79/19,311.41
  6. Step 6: Final answer
    x = 10,264.51

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