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Finding the Fourth Proportional to 73,971.72, 110,963.16 and 21,381.60

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Solution

The fourth proportional to 73,971.72, 110,963.16 and 21,381.60 is: 32,074.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,971.72 : 110,963.16 = 21,381.60 : x
  2. Step 2: Convert to fraction form
    73,971.72/110,963.16 = 21,381.60/x
  3. Step 3: Cross multiply
    73,971.72x = 110,963.16 × 21,381.60
  4. Step 4: Simplify right side
    73,971.72x = 2,372,569,901.86
  5. Step 5: Solve for x
    x = 2,372,569,901.86/73,971.72
  6. Step 6: Final answer
    x = 32,074.01

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