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Finding the Fourth Proportional to 111,842.40, 167,812.20 and 56,438.40

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Solution

The fourth proportional to 111,842.40, 167,812.20 and 56,438.40 is: 84,682.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,842.40 : 167,812.20 = 56,438.40 : x
  2. Step 2: Convert to fraction form
    111,842.40/167,812.20 = 56,438.40/x
  3. Step 3: Cross multiply
    111,842.40x = 167,812.20 × 56,438.40
  4. Step 4: Simplify right side
    111,842.40x = 9,471,052,068.48
  5. Step 5: Solve for x
    x = 9,471,052,068.48/111,842.40
  6. Step 6: Final answer
    x = 84,682.12

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