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Finding the Fourth Proportional to 10,589.92, 15,886.64 and 3,662.80

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Solution

The fourth proportional to 10,589.92, 15,886.64 and 3,662.80 is: 5,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,589.92 : 15,886.64 = 3,662.80 : x
  2. Step 2: Convert to fraction form
    10,589.92/15,886.64 = 3,662.80/x
  3. Step 3: Cross multiply
    10,589.92x = 15,886.64 × 3,662.80
  4. Step 4: Simplify right side
    10,589.92x = 58,189,584.99
  5. Step 5: Solve for x
    x = 58,189,584.99/10,589.92
  6. Step 6: Final answer
    x = 5,494.81

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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.