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Finding the Fourth Proportional to 13,073.67, 18,036.18 and 8,591.54

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Solution

The fourth proportional to 13,073.67, 18,036.18 and 8,591.54 is: 11,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.67 : 18,036.18 = 8,591.54 : x
  2. Step 2: Convert to fraction form
    13,073.67/18,036.18 = 8,591.54/x
  3. Step 3: Cross multiply
    13,073.67x = 18,036.18 × 8,591.54
  4. Step 4: Simplify right side
    13,073.67x = 154,958,471.74
  5. Step 5: Solve for x
    x = 154,958,471.74/13,073.67
  6. Step 6: Final answer
    x = 11,852.71

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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.