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Finding the Fourth Proportional to 18,586.92, 27,871.19 and 6,740.21

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Solution

The fourth proportional to 18,586.92, 27,871.19 and 6,740.21 is: 10,106.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.92 : 27,871.19 = 6,740.21 : x
  2. Step 2: Convert to fraction form
    18,586.92/27,871.19 = 6,740.21/x
  3. Step 3: Cross multiply
    18,586.92x = 27,871.19 × 6,740.21
  4. Step 4: Simplify right side
    18,586.92x = 187,857,734.80
  5. Step 5: Solve for x
    x = 187,857,734.80/18,586.92
  6. Step 6: Final answer
    x = 10,106.99

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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.