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Finding the Fourth Proportional to 136,480.40, 204,931.80 and 74,272.40

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Solution

The fourth proportional to 136,480.40, 204,931.80 and 74,272.40 is: 111,523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,480.40 : 204,931.80 = 74,272.40 : x
  2. Step 2: Convert to fraction form
    136,480.40/204,931.80 = 74,272.40/x
  3. Step 3: Cross multiply
    136,480.40x = 204,931.80 × 74,272.40
  4. Step 4: Simplify right side
    136,480.40x = 15,220,776,622.32
  5. Step 5: Solve for x
    x = 15,220,776,622.32/136,480.40
  6. Step 6: Final answer
    x = 111,523.53

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