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Finding the Fourth Proportional to 18,434.59, 27,648.84 and 7,906.31

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Solution

The fourth proportional to 18,434.59, 27,648.84 and 7,906.31 is: 11,858.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,434.59 : 27,648.84 = 7,906.31 : x
  2. Step 2: Convert to fraction form
    18,434.59/27,648.84 = 7,906.31/x
  3. Step 3: Cross multiply
    18,434.59x = 27,648.84 × 7,906.31
  4. Step 4: Simplify right side
    18,434.59x = 218,600,295.27
  5. Step 5: Solve for x
    x = 218,600,295.27/18,434.59
  6. Step 6: Final answer
    x = 11,858.16

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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.