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Finding the Fourth Proportional to 99,601.72, 137,446.36 and 54,278.72

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Solution

The fourth proportional to 99,601.72, 137,446.36 and 54,278.72 is: 74,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,601.72 : 137,446.36 = 54,278.72 : x
  2. Step 2: Convert to fraction form
    99,601.72/137,446.36 = 54,278.72/x
  3. Step 3: Cross multiply
    99,601.72x = 137,446.36 × 54,278.72
  4. Step 4: Simplify right side
    99,601.72x = 7,460,412,181.95
  5. Step 5: Solve for x
    x = 7,460,412,181.95/99,601.72
  6. Step 6: Final answer
    x = 74,902.45

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