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Finding the Fourth Proportional to 15,958.72, 23,923.20 and 5,421.54

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Solution

The fourth proportional to 15,958.72, 23,923.20 and 5,421.54 is: 8,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,958.72 : 23,923.20 = 5,421.54 : x
  2. Step 2: Convert to fraction form
    15,958.72/23,923.20 = 5,421.54/x
  3. Step 3: Cross multiply
    15,958.72x = 23,923.20 × 5,421.54
  4. Step 4: Simplify right side
    15,958.72x = 129,700,585.73
  5. Step 5: Solve for x
    x = 129,700,585.73/15,958.72
  6. Step 6: Final answer
    x = 8,127.25

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