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Finding the Fourth Proportional to 76,081.65, 114,048.31 and 31,721.09

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Solution

The fourth proportional to 76,081.65, 114,048.31 and 31,721.09 is: 47,550.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,081.65 : 114,048.31 = 31,721.09 : x
  2. Step 2: Convert to fraction form
    76,081.65/114,048.31 = 31,721.09/x
  3. Step 3: Cross multiply
    76,081.65x = 114,048.31 × 31,721.09
  4. Step 4: Simplify right side
    76,081.65x = 3,617,736,914.86
  5. Step 5: Solve for x
    x = 3,617,736,914.86/76,081.65
  6. Step 6: Final answer
    x = 47,550.71

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