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Finding the Fourth Proportional to 6,978.69, 9,630.59 and 3,835.08

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Solution

The fourth proportional to 6,978.69, 9,630.59 and 3,835.08 is: 5,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978.69 : 9,630.59 = 3,835.08 : x
  2. Step 2: Convert to fraction form
    6,978.69/9,630.59 = 3,835.08/x
  3. Step 3: Cross multiply
    6,978.69x = 9,630.59 × 3,835.08
  4. Step 4: Simplify right side
    6,978.69x = 36,934,083.10
  5. Step 5: Solve for x
    x = 36,934,083.10/6,978.69
  6. Step 6: Final answer
    x = 5,292.41

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