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Finding the Fourth Proportional to 18,608.76, 27,931.44 and 13,664.52

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Solution

The fourth proportional to 18,608.76, 27,931.44 and 13,664.52 is: 20,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.76 : 27,931.44 = 13,664.52 : x
  2. Step 2: Convert to fraction form
    18,608.76/27,931.44 = 13,664.52/x
  3. Step 3: Cross multiply
    18,608.76x = 27,931.44 × 13,664.52
  4. Step 4: Simplify right side
    18,608.76x = 381,669,720.51
  5. Step 5: Solve for x
    x = 381,669,720.51/18,608.76
  6. Step 6: Final answer
    x = 20,510.22

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