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Finding the Fourth Proportional to 66,956.76, 100,385.93 and 31,921.02

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Solution

The fourth proportional to 66,956.76, 100,385.93 and 31,921.02 is: 47,858.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,956.76 : 100,385.93 = 31,921.02 : x
  2. Step 2: Convert to fraction form
    66,956.76/100,385.93 = 31,921.02/x
  3. Step 3: Cross multiply
    66,956.76x = 100,385.93 × 31,921.02
  4. Step 4: Simplify right side
    66,956.76x = 3,204,421,359.05
  5. Step 5: Solve for x
    x = 3,204,421,359.05/66,956.76
  6. Step 6: Final answer
    x = 47,858.07

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