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Finding the Fourth Proportional to 112,840.70, 155,712.98 and 61,844.42

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Solution

The fourth proportional to 112,840.70, 155,712.98 and 61,844.42 is: 85,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,840.70 : 155,712.98 = 61,844.42 : x
  2. Step 2: Convert to fraction form
    112,840.70/155,712.98 = 61,844.42/x
  3. Step 3: Cross multiply
    112,840.70x = 155,712.98 × 61,844.42
  4. Step 4: Simplify right side
    112,840.70x = 9,629,978,934.57
  5. Step 5: Solve for x
    x = 9,629,978,934.57/112,840.70
  6. Step 6: Final answer
    x = 85,341.36

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