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Finding the Fourth Proportional to 18,058.92, 27,090.18 and 6,811.41

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Solution

The fourth proportional to 18,058.92, 27,090.18 and 6,811.41 is: 10,217.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,058.92 : 27,090.18 = 6,811.41 : x
  2. Step 2: Convert to fraction form
    18,058.92/27,090.18 = 6,811.41/x
  3. Step 3: Cross multiply
    18,058.92x = 27,090.18 × 6,811.41
  4. Step 4: Simplify right side
    18,058.92x = 184,522,322.95
  5. Step 5: Solve for x
    x = 184,522,322.95/18,058.92
  6. Step 6: Final answer
    x = 10,217.79

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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.