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Finding the Fourth Proportional to 70,601.40, 105,815.70 and 31,116.60

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Solution

The fourth proportional to 70,601.40, 105,815.70 and 31,116.60 is: 46,636.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,601.40 : 105,815.70 = 31,116.60 : x
  2. Step 2: Convert to fraction form
    70,601.40/105,815.70 = 31,116.60/x
  3. Step 3: Cross multiply
    70,601.40x = 105,815.70 × 31,116.60
  4. Step 4: Simplify right side
    70,601.40x = 3,292,624,810.62
  5. Step 5: Solve for x
    x = 3,292,624,810.62/70,601.40
  6. Step 6: Final answer
    x = 46,636.82

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