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Finding the Fourth Proportional to 13,994.33, 20,993.42 and 5,108.49

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Solution

The fourth proportional to 13,994.33, 20,993.42 and 5,108.49 is: 7,663.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.33 : 20,993.42 = 5,108.49 : x
  2. Step 2: Convert to fraction form
    13,994.33/20,993.42 = 5,108.49/x
  3. Step 3: Cross multiply
    13,994.33x = 20,993.42 × 5,108.49
  4. Step 4: Simplify right side
    13,994.33x = 107,244,688.91
  5. Step 5: Solve for x
    x = 107,244,688.91/13,994.33
  6. Step 6: Final answer
    x = 7,663.44

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Double scale
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Similar ratio
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1.5x scale

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.