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Finding the Fourth Proportional to 18,729.71, 28,098.67 and 7,042.93

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Solution

The fourth proportional to 18,729.71, 28,098.67 and 7,042.93 is: 10,565.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.71 : 28,098.67 = 7,042.93 : x
  2. Step 2: Convert to fraction form
    18,729.71/28,098.67 = 7,042.93/x
  3. Step 3: Cross multiply
    18,729.71x = 28,098.67 × 7,042.93
  4. Step 4: Simplify right side
    18,729.71x = 197,896,965.90
  5. Step 5: Solve for x
    x = 197,896,965.90/18,729.71
  6. Step 6: Final answer
    x = 10,565.94

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