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Finding the Fourth Proportional to 19,368.82, 29,058.09 and 5,517.82

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Solution

The fourth proportional to 19,368.82, 29,058.09 and 5,517.82 is: 8,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.82 : 29,058.09 = 5,517.82 : x
  2. Step 2: Convert to fraction form
    19,368.82/29,058.09 = 5,517.82/x
  3. Step 3: Cross multiply
    19,368.82x = 29,058.09 × 5,517.82
  4. Step 4: Simplify right side
    19,368.82x = 160,337,310.16
  5. Step 5: Solve for x
    x = 160,337,310.16/19,368.82
  6. Step 6: Final answer
    x = 8,278.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.