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Finding the Fourth Proportional to 15,978.69, 23,968.26 and 6,118.47

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Solution

The fourth proportional to 15,978.69, 23,968.26 and 6,118.47 is: 9,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.69 : 23,968.26 = 6,118.47 : x
  2. Step 2: Convert to fraction form
    15,978.69/23,968.26 = 6,118.47/x
  3. Step 3: Cross multiply
    15,978.69x = 23,968.26 × 6,118.47
  4. Step 4: Simplify right side
    15,978.69x = 146,649,079.76
  5. Step 5: Solve for x
    x = 146,649,079.76/15,978.69
  6. Step 6: Final answer
    x = 9,177.79

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