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Finding the Fourth Proportional to 18,624.11, 27,936.17 and 13,102.16

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Solution

The fourth proportional to 18,624.11, 27,936.17 and 13,102.16 is: 19,653.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.11 : 27,936.17 = 13,102.16 : x
  2. Step 2: Convert to fraction form
    18,624.11/27,936.17 = 13,102.16/x
  3. Step 3: Cross multiply
    18,624.11x = 27,936.17 × 13,102.16
  4. Step 4: Simplify right side
    18,624.11x = 366,024,169.13
  5. Step 5: Solve for x
    x = 366,024,169.13/18,624.11
  6. Step 6: Final answer
    x = 19,653.24

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Similar ratio
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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.