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Finding the Fourth Proportional to 66,847.48, 100,259.92 and 31,312.60

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Solution

The fourth proportional to 66,847.48, 100,259.92 and 31,312.60 is: 46,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,847.48 : 100,259.92 = 31,312.60 : x
  2. Step 2: Convert to fraction form
    66,847.48/100,259.92 = 31,312.60/x
  3. Step 3: Cross multiply
    66,847.48x = 100,259.92 × 31,312.60
  4. Step 4: Simplify right side
    66,847.48x = 3,139,398,770.99
  5. Step 5: Solve for x
    x = 3,139,398,770.99/66,847.48
  6. Step 6: Final answer
    x = 46,963.61

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