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Finding the Fourth Proportional to 18,388.96, 25,312.68 and 16,027

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Solution

The fourth proportional to 18,388.96, 25,312.68 and 16,027 is: 22,061.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.96 : 25,312.68 = 16,027 : x
  2. Step 2: Convert to fraction form
    18,388.96/25,312.68 = 16,027/x
  3. Step 3: Cross multiply
    18,388.96x = 25,312.68 × 16,027
  4. Step 4: Simplify right side
    18,388.96x = 405,686,322.36
  5. Step 5: Solve for x
    x = 405,686,322.36/18,388.96
  6. Step 6: Final answer
    x = 22,061.41

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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.