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Finding the Fourth Proportional to 92,910.30, 128,211.37 and 50,468.78

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Solution

The fourth proportional to 92,910.30, 128,211.37 and 50,468.78 is: 69,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,910.30 : 128,211.37 = 50,468.78 : x
  2. Step 2: Convert to fraction form
    92,910.30/128,211.37 = 50,468.78/x
  3. Step 3: Cross multiply
    92,910.30x = 128,211.37 × 50,468.78
  4. Step 4: Simplify right side
    92,910.30x = 6,470,671,426.03
  5. Step 5: Solve for x
    x = 6,470,671,426.03/92,910.30
  6. Step 6: Final answer
    x = 69,644.29

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