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Finding the Fourth Proportional to 335,405.28, 503,107.92 and 86,087.28

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Solution

The fourth proportional to 335,405.28, 503,107.92 and 86,087.28 is: 129,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,405.28 : 503,107.92 = 86,087.28 : x
  2. Step 2: Convert to fraction form
    335,405.28/503,107.92 = 86,087.28/x
  3. Step 3: Cross multiply
    335,405.28x = 503,107.92 × 86,087.28
  4. Step 4: Simplify right side
    335,405.28x = 43,311,192,379.26
  5. Step 5: Solve for x
    x = 43,311,192,379.26/335,405.28
  6. Step 6: Final answer
    x = 129,130.92

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