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Finding the Fourth Proportional to 18,494.17, 25,520.47 and 11,321.08

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Solution

The fourth proportional to 18,494.17, 25,520.47 and 11,321.08 is: 15,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494.17 : 25,520.47 = 11,321.08 : x
  2. Step 2: Convert to fraction form
    18,494.17/25,520.47 = 11,321.08/x
  3. Step 3: Cross multiply
    18,494.17x = 25,520.47 × 11,321.08
  4. Step 4: Simplify right side
    18,494.17x = 288,919,333.96
  5. Step 5: Solve for x
    x = 288,919,333.96/18,494.17
  6. Step 6: Final answer
    x = 15,622.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.