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Finding the Fourth Proportional to 26,686.99, 36,828.44 and 15,508.99

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Solution

The fourth proportional to 26,686.99, 36,828.44 and 15,508.99 is: 21,402.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.99 : 36,828.44 = 15,508.99 : x
  2. Step 2: Convert to fraction form
    26,686.99/36,828.44 = 15,508.99/x
  3. Step 3: Cross multiply
    26,686.99x = 36,828.44 × 15,508.99
  4. Step 4: Simplify right side
    26,686.99x = 571,171,907.68
  5. Step 5: Solve for x
    x = 571,171,907.68/26,686.99
  6. Step 6: Final answer
    x = 21,402.64

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