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Finding the Fourth Proportional to 190,611.63, 263,044.31 and 105,728.69

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Solution

The fourth proportional to 190,611.63, 263,044.31 and 105,728.69 is: 145,905.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,611.63 : 263,044.31 = 105,728.69 : x
  2. Step 2: Convert to fraction form
    190,611.63/263,044.31 = 105,728.69/x
  3. Step 3: Cross multiply
    190,611.63x = 263,044.31 × 105,728.69
  4. Step 4: Simplify right side
    190,611.63x = 27,811,331,031.95
  5. Step 5: Solve for x
    x = 27,811,331,031.95/190,611.63
  6. Step 6: Final answer
    x = 145,905.74

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