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Finding the Fourth Proportional to 20,887.91, 31,338.36 and 6,848.06

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Solution

The fourth proportional to 20,887.91, 31,338.36 and 6,848.06 is: 10,274.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.91 : 31,338.36 = 6,848.06 : x
  2. Step 2: Convert to fraction form
    20,887.91/31,338.36 = 6,848.06/x
  3. Step 3: Cross multiply
    20,887.91x = 31,338.36 × 6,848.06
  4. Step 4: Simplify right side
    20,887.91x = 214,606,969.58
  5. Step 5: Solve for x
    x = 214,606,969.58/20,887.91
  6. Step 6: Final answer
    x = 10,274.22

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