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Finding the Fourth Proportional to 18,092.80, 27,092.46 and 12,487.76

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Solution

The fourth proportional to 18,092.80, 27,092.46 and 12,487.76 is: 18,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,092.80 : 27,092.46 = 12,487.76 : x
  2. Step 2: Convert to fraction form
    18,092.80/27,092.46 = 12,487.76/x
  3. Step 3: Cross multiply
    18,092.80x = 27,092.46 × 12,487.76
  4. Step 4: Simplify right side
    18,092.80x = 338,324,138.29
  5. Step 5: Solve for x
    x = 338,324,138.29/18,092.80
  6. Step 6: Final answer
    x = 18,699.38

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1.5x scale

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.