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Finding the Fourth Proportional to 18,356.96, 27,531.80 and 8,992.96

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Solution

The fourth proportional to 18,356.96, 27,531.80 and 8,992.96 is: 13,487.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.96 : 27,531.80 = 8,992.96 : x
  2. Step 2: Convert to fraction form
    18,356.96/27,531.80 = 8,992.96/x
  3. Step 3: Cross multiply
    18,356.96x = 27,531.80 × 8,992.96
  4. Step 4: Simplify right side
    18,356.96x = 247,592,376.13
  5. Step 5: Solve for x
    x = 247,592,376.13/18,356.96
  6. Step 6: Final answer
    x = 13,487.66

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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.