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Finding the Fourth Proportional to 105,153.32, 157,644.90 and 71,789.48

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Solution

The fourth proportional to 105,153.32, 157,644.90 and 71,789.48 is: 107,626.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,153.32 : 157,644.90 = 71,789.48 : x
  2. Step 2: Convert to fraction form
    105,153.32/157,644.90 = 71,789.48/x
  3. Step 3: Cross multiply
    105,153.32x = 157,644.90 × 71,789.48
  4. Step 4: Simplify right side
    105,153.32x = 11,317,245,395.65
  5. Step 5: Solve for x
    x = 11,317,245,395.65/105,153.32
  6. Step 6: Final answer
    x = 107,626.13

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