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Finding the Fourth Proportional to 13,589.70, 18,736.42 and 8,801.18

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Solution

The fourth proportional to 13,589.70, 18,736.42 and 8,801.18 is: 12,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.70 : 18,736.42 = 8,801.18 : x
  2. Step 2: Convert to fraction form
    13,589.70/18,736.42 = 8,801.18/x
  3. Step 3: Cross multiply
    13,589.70x = 18,736.42 × 8,801.18
  4. Step 4: Simplify right side
    13,589.70x = 164,902,604.98
  5. Step 5: Solve for x
    x = 164,902,604.98/13,589.70
  6. Step 6: Final answer
    x = 12,134.39

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1.5x scale

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.