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Finding the Fourth Proportional to 18,401.61, 27,583.38 and 8,532.84

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Solution

The fourth proportional to 18,401.61, 27,583.38 and 8,532.84 is: 12,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,401.61 : 27,583.38 = 8,532.84 : x
  2. Step 2: Convert to fraction form
    18,401.61/27,583.38 = 8,532.84/x
  3. Step 3: Cross multiply
    18,401.61x = 27,583.38 × 8,532.84
  4. Step 4: Simplify right side
    18,401.61x = 235,364,568.20
  5. Step 5: Solve for x
    x = 235,364,568.20/18,401.61
  6. Step 6: Final answer
    x = 12,790.43

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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.