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Finding the Fourth Proportional to 28,473.66, 39,294.72 and 15,900.84

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Solution

The fourth proportional to 28,473.66, 39,294.72 and 15,900.84 is: 21,943.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.66 : 39,294.72 = 15,900.84 : x
  2. Step 2: Convert to fraction form
    28,473.66/39,294.72 = 15,900.84/x
  3. Step 3: Cross multiply
    28,473.66x = 39,294.72 × 15,900.84
  4. Step 4: Simplify right side
    28,473.66x = 624,819,055.56
  5. Step 5: Solve for x
    x = 624,819,055.56/28,473.66
  6. Step 6: Final answer
    x = 21,943.76

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