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Finding the Fourth Proportional to 113,220.80, 169,831.20 and 111,276.80

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Solution

The fourth proportional to 113,220.80, 169,831.20 and 111,276.80 is: 166,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,220.80 : 169,831.20 = 111,276.80 : x
  2. Step 2: Convert to fraction form
    113,220.80/169,831.20 = 111,276.80/x
  3. Step 3: Cross multiply
    113,220.80x = 169,831.20 × 111,276.80
  4. Step 4: Simplify right side
    113,220.80x = 18,898,272,476.16
  5. Step 5: Solve for x
    x = 18,898,272,476.16/113,220.80
  6. Step 6: Final answer
    x = 166,915.20

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