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Finding the Fourth Proportional to 170,187.94, 255,439.54 and 86,007.34

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Solution

The fourth proportional to 170,187.94, 255,439.54 and 86,007.34 is: 129,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,187.94 : 255,439.54 = 86,007.34 : x
  2. Step 2: Convert to fraction form
    170,187.94/255,439.54 = 86,007.34/x
  3. Step 3: Cross multiply
    170,187.94x = 255,439.54 × 86,007.34
  4. Step 4: Simplify right side
    170,187.94x = 21,969,675,366.22
  5. Step 5: Solve for x
    x = 21,969,675,366.22/170,187.94
  6. Step 6: Final answer
    x = 129,090.67

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