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Finding the Fourth Proportional to 77,795.40, 116,750.70 and 31,081.80

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Solution

The fourth proportional to 77,795.40, 116,750.70 and 31,081.80 is: 46,645.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,795.40 : 116,750.70 = 31,081.80 : x
  2. Step 2: Convert to fraction form
    77,795.40/116,750.70 = 31,081.80/x
  3. Step 3: Cross multiply
    77,795.40x = 116,750.70 × 31,081.80
  4. Step 4: Simplify right side
    77,795.40x = 3,628,821,907.26
  5. Step 5: Solve for x
    x = 3,628,821,907.26/77,795.40
  6. Step 6: Final answer
    x = 46,645.71

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