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Finding the Fourth Proportional to 20,933.56, 31,403.16 and 6,143.56

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Solution

The fourth proportional to 20,933.56, 31,403.16 and 6,143.56 is: 9,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.56 : 31,403.16 = 6,143.56 : x
  2. Step 2: Convert to fraction form
    20,933.56/31,403.16 = 6,143.56/x
  3. Step 3: Cross multiply
    20,933.56x = 31,403.16 × 6,143.56
  4. Step 4: Simplify right side
    20,933.56x = 192,927,197.65
  5. Step 5: Solve for x
    x = 192,927,197.65/20,933.56
  6. Step 6: Final answer
    x = 9,216.17

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