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Finding the Fourth Proportional to 42,369.99, 63,555.37 and 10,780.09

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Solution

The fourth proportional to 42,369.99, 63,555.37 and 10,780.09 is: 16,170.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,369.99 : 63,555.37 = 10,780.09 : x
  2. Step 2: Convert to fraction form
    42,369.99/63,555.37 = 10,780.09/x
  3. Step 3: Cross multiply
    42,369.99x = 63,555.37 × 10,780.09
  4. Step 4: Simplify right side
    42,369.99x = 685,132,713.57
  5. Step 5: Solve for x
    x = 685,132,713.57/42,369.99
  6. Step 6: Final answer
    x = 16,170.23

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