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Finding the Fourth Proportional to 13,575.53, 20,361.71 and 5,254.81

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Solution

The fourth proportional to 13,575.53, 20,361.71 and 5,254.81 is: 7,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,575.53 : 20,361.71 = 5,254.81 : x
  2. Step 2: Convert to fraction form
    13,575.53/20,361.71 = 5,254.81/x
  3. Step 3: Cross multiply
    13,575.53x = 20,361.71 × 5,254.81
  4. Step 4: Simplify right side
    13,575.53x = 106,996,879.56
  5. Step 5: Solve for x
    x = 106,996,879.56/13,575.53
  6. Step 6: Final answer
    x = 7,881.60

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