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Finding the Fourth Proportional to 121,758.96, 167,918.56 and 76,441.16

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Solution

The fourth proportional to 121,758.96, 167,918.56 and 76,441.16 is: 105,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,758.96 : 167,918.56 = 76,441.16 : x
  2. Step 2: Convert to fraction form
    121,758.96/167,918.56 = 76,441.16/x
  3. Step 3: Cross multiply
    121,758.96x = 167,918.56 × 76,441.16
  4. Step 4: Simplify right side
    121,758.96x = 12,835,889,855.76
  5. Step 5: Solve for x
    x = 12,835,889,855.76/121,758.96
  6. Step 6: Final answer
    x = 105,420.50

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