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Finding the Fourth Proportional to 31,161.71, 42,988.22 and 22,650.64

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Solution

The fourth proportional to 31,161.71, 42,988.22 and 22,650.64 is: 31,247.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.71 : 42,988.22 = 22,650.64 : x
  2. Step 2: Convert to fraction form
    31,161.71/42,988.22 = 22,650.64/x
  3. Step 3: Cross multiply
    31,161.71x = 42,988.22 × 22,650.64
  4. Step 4: Simplify right side
    31,161.71x = 973,710,559.68
  5. Step 5: Solve for x
    x = 973,710,559.68/31,161.71
  6. Step 6: Final answer
    x = 31,247.02

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