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Finding the Fourth Proportional to 69,978,629.55, 104,960,857.10 and 18,865,815.15

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Solution

The fourth proportional to 69,978,629.55, 104,960,857.10 and 18,865,815.15 is: 28,296,812.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978,629.55 : 104,960,857.10 = 18,865,815.15 : x
  2. Step 2: Convert to fraction form
    69,978,629.55/104,960,857.10 = 18,865,815.15/x
  3. Step 3: Cross multiply
    69,978,629.55x = 104,960,857.10 × 18,865,815.15
  4. Step 4: Simplify right side
    69,978,629.55x = 1,980,172,127,939,835.75
  5. Step 5: Solve for x
    x = 1,980,172,127,939,835.75/69,978,629.55
  6. Step 6: Final answer
    x = 28,296,812.05

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