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Finding the Fourth Proportional to 18,624.61, 27,936.84 and 7,531.16

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Solution

The fourth proportional to 18,624.61, 27,936.84 and 7,531.16 is: 11,296.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.61 : 27,936.84 = 7,531.16 : x
  2. Step 2: Convert to fraction form
    18,624.61/27,936.84 = 7,531.16/x
  3. Step 3: Cross multiply
    18,624.61x = 27,936.84 × 7,531.16
  4. Step 4: Simplify right side
    18,624.61x = 210,396,774.28
  5. Step 5: Solve for x
    x = 210,396,774.28/18,624.61
  6. Step 6: Final answer
    x = 11,296.71

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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.