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Finding the Fourth Proportional to 74,857.45, 103,320.64 and 49,368.41

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Solution

The fourth proportional to 74,857.45, 103,320.64 and 49,368.41 is: 68,139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,857.45 : 103,320.64 = 49,368.41 : x
  2. Step 2: Convert to fraction form
    74,857.45/103,320.64 = 49,368.41/x
  3. Step 3: Cross multiply
    74,857.45x = 103,320.64 × 49,368.41
  4. Step 4: Simplify right side
    74,857.45x = 5,100,775,716.98
  5. Step 5: Solve for x
    x = 5,100,775,716.98/74,857.45
  6. Step 6: Final answer
    x = 68,139.85

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