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Finding the Fourth Proportional to 118,415.40, 177,623.10 and 74,178.60

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Solution

The fourth proportional to 118,415.40, 177,623.10 and 74,178.60 is: 111,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,415.40 : 177,623.10 = 74,178.60 : x
  2. Step 2: Convert to fraction form
    118,415.40/177,623.10 = 74,178.60/x
  3. Step 3: Cross multiply
    118,415.40x = 177,623.10 × 74,178.60
  4. Step 4: Simplify right side
    118,415.40x = 13,175,832,885.66
  5. Step 5: Solve for x
    x = 13,175,832,885.66/118,415.40
  6. Step 6: Final answer
    x = 111,267.90

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