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Finding the Fourth Proportional to 116,831.54, 161,121.66 and 76,530.60

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Solution

The fourth proportional to 116,831.54, 161,121.66 and 76,530.60 is: 105,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,831.54 : 161,121.66 = 76,530.60 : x
  2. Step 2: Convert to fraction form
    116,831.54/161,121.66 = 76,530.60/x
  3. Step 3: Cross multiply
    116,831.54x = 161,121.66 × 76,530.60
  4. Step 4: Simplify right side
    116,831.54x = 12,330,737,312.80
  5. Step 5: Solve for x
    x = 12,330,737,312.80/116,831.54
  6. Step 6: Final answer
    x = 105,542.89

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