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Finding the Fourth Proportional to 12,322.59, 18,481.17 and 3,555.60

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Solution

The fourth proportional to 12,322.59, 18,481.17 and 3,555.60 is: 5,332.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.59 : 18,481.17 = 3,555.60 : x
  2. Step 2: Convert to fraction form
    12,322.59/18,481.17 = 3,555.60/x
  3. Step 3: Cross multiply
    12,322.59x = 18,481.17 × 3,555.60
  4. Step 4: Simplify right side
    12,322.59x = 65,711,648.05
  5. Step 5: Solve for x
    x = 65,711,648.05/12,322.59
  6. Step 6: Final answer
    x = 5,332.62

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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.