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Finding the Fourth Proportional to 31,798.73, 43,882.41 and 19,868.98

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Solution

The fourth proportional to 31,798.73, 43,882.41 and 19,868.98 is: 27,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,798.73 : 43,882.41 = 19,868.98 : x
  2. Step 2: Convert to fraction form
    31,798.73/43,882.41 = 19,868.98/x
  3. Step 3: Cross multiply
    31,798.73x = 43,882.41 × 19,868.98
  4. Step 4: Simplify right side
    31,798.73x = 871,898,726.64
  5. Step 5: Solve for x
    x = 871,898,726.64/31,798.73
  6. Step 6: Final answer
    x = 27,419.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.