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Finding the Fourth Proportional to 99,434.64, 137,219.82 and 54,722.64

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Solution

The fourth proportional to 99,434.64, 137,219.82 and 54,722.64 is: 75,517.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,434.64 : 137,219.82 = 54,722.64 : x
  2. Step 2: Convert to fraction form
    99,434.64/137,219.82 = 54,722.64/x
  3. Step 3: Cross multiply
    99,434.64x = 137,219.82 × 54,722.64
  4. Step 4: Simplify right side
    99,434.64x = 7,509,030,810.72
  5. Step 5: Solve for x
    x = 7,509,030,810.72/99,434.64
  6. Step 6: Final answer
    x = 75,517.25

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