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Finding the Fourth Proportional to 128,456.77, 192,435.79 and 94,661.44

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Solution

The fourth proportional to 128,456.77, 192,435.79 and 94,661.44 is: 141,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,456.77 : 192,435.79 = 94,661.44 : x
  2. Step 2: Convert to fraction form
    128,456.77/192,435.79 = 94,661.44/x
  3. Step 3: Cross multiply
    128,456.77x = 192,435.79 × 94,661.44
  4. Step 4: Simplify right side
    128,456.77x = 18,216,248,626.17
  5. Step 5: Solve for x
    x = 18,216,248,626.17/128,456.77
  6. Step 6: Final answer
    x = 141,808.40

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