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Finding the Fourth Proportional to 125,840.40, 188,760.60 and 102,800.40

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Solution

The fourth proportional to 125,840.40, 188,760.60 and 102,800.40 is: 154,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,840.40 : 188,760.60 = 102,800.40 : x
  2. Step 2: Convert to fraction form
    125,840.40/188,760.60 = 102,800.40/x
  3. Step 3: Cross multiply
    125,840.40x = 188,760.60 × 102,800.40
  4. Step 4: Simplify right side
    125,840.40x = 19,404,665,184.24
  5. Step 5: Solve for x
    x = 19,404,665,184.24/125,840.40
  6. Step 6: Final answer
    x = 154,200.60

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