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Finding the Fourth Proportional to 18,392.36, 27,582.30 and 5,909.31

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Solution

The fourth proportional to 18,392.36, 27,582.30 and 5,909.31 is: 8,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.36 : 27,582.30 = 5,909.31 : x
  2. Step 2: Convert to fraction form
    18,392.36/27,582.30 = 5,909.31/x
  3. Step 3: Cross multiply
    18,392.36x = 27,582.30 × 5,909.31
  4. Step 4: Simplify right side
    18,392.36x = 162,992,361.21
  5. Step 5: Solve for x
    x = 162,992,361.21/18,392.36
  6. Step 6: Final answer
    x = 8,861.96

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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.