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Finding the Fourth Proportional to 18,388.92, 27,585 and 5,241

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Solution

The fourth proportional to 18,388.92, 27,585 and 5,241 is: 7,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.92 : 27,585 = 5,241 : x
  2. Step 2: Convert to fraction form
    18,388.92/27,585 = 5,241/x
  3. Step 3: Cross multiply
    18,388.92x = 27,585 × 5,241
  4. Step 4: Simplify right side
    18,388.92x = 144,572,985
  5. Step 5: Solve for x
    x = 144,572,985/18,388.92
  6. Step 6: Final answer
    x = 7,861.96

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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.