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Finding the Fourth Proportional to 21,208.56, 31,799.77 and 7,167.26

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Solution

The fourth proportional to 21,208.56, 31,799.77 and 7,167.26 is: 10,746.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.56 : 31,799.77 = 7,167.26 : x
  2. Step 2: Convert to fraction form
    21,208.56/31,799.77 = 7,167.26/x
  3. Step 3: Cross multiply
    21,208.56x = 31,799.77 × 7,167.26
  4. Step 4: Simplify right side
    21,208.56x = 227,917,183.69
  5. Step 5: Solve for x
    x = 227,917,183.69/21,208.56
  6. Step 6: Final answer
    x = 10,746.47

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