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Finding the Fourth Proportional to 19,420.98, 26,802.36 and 11,868.74

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Solution

The fourth proportional to 19,420.98, 26,802.36 and 11,868.74 is: 16,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.98 : 26,802.36 = 11,868.74 : x
  2. Step 2: Convert to fraction form
    19,420.98/26,802.36 = 11,868.74/x
  3. Step 3: Cross multiply
    19,420.98x = 26,802.36 × 11,868.74
  4. Step 4: Simplify right side
    19,420.98x = 318,110,242.23
  5. Step 5: Solve for x
    x = 318,110,242.23/19,420.98
  6. Step 6: Final answer
    x = 16,379.72

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