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Finding the Fourth Proportional to 16,872.66, 25,269.66 and 13,338.96

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Solution

The fourth proportional to 16,872.66, 25,269.66 and 13,338.96 is: 19,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872.66 : 25,269.66 = 13,338.96 : x
  2. Step 2: Convert to fraction form
    16,872.66/25,269.66 = 13,338.96/x
  3. Step 3: Cross multiply
    16,872.66x = 25,269.66 × 13,338.96
  4. Step 4: Simplify right side
    16,872.66x = 337,070,983.95
  5. Step 5: Solve for x
    x = 337,070,983.95/16,872.66
  6. Step 6: Final answer
    x = 19,977.35

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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.