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Finding the Fourth Proportional to 77,392.56, 116,140.62 and 28,144.56

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Solution

The fourth proportional to 77,392.56, 116,140.62 and 28,144.56 is: 42,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,392.56 : 116,140.62 = 28,144.56 : x
  2. Step 2: Convert to fraction form
    77,392.56/116,140.62 = 28,144.56/x
  3. Step 3: Cross multiply
    77,392.56x = 116,140.62 × 28,144.56
  4. Step 4: Simplify right side
    77,392.56x = 3,268,726,648.03
  5. Step 5: Solve for x
    x = 3,268,726,648.03/77,392.56
  6. Step 6: Final answer
    x = 42,235.67

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