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Finding the Fourth Proportional to 13,757.20, 18,984.18 and 8,092.60

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Solution

The fourth proportional to 13,757.20, 18,984.18 and 8,092.60 is: 11,167.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.20 : 18,984.18 = 8,092.60 : x
  2. Step 2: Convert to fraction form
    13,757.20/18,984.18 = 8,092.60/x
  3. Step 3: Cross multiply
    13,757.20x = 18,984.18 × 8,092.60
  4. Step 4: Simplify right side
    13,757.20x = 153,631,375.07
  5. Step 5: Solve for x
    x = 153,631,375.07/13,757.20
  6. Step 6: Final answer
    x = 11,167.34

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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.