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Finding the Fourth Proportional to 18,551.96, 27,828 and 5,404.66

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Solution

The fourth proportional to 18,551.96, 27,828 and 5,404.66 is: 8,107.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.96 : 27,828 = 5,404.66 : x
  2. Step 2: Convert to fraction form
    18,551.96/27,828 = 5,404.66/x
  3. Step 3: Cross multiply
    18,551.96x = 27,828 × 5,404.66
  4. Step 4: Simplify right side
    18,551.96x = 150,400,878.48
  5. Step 5: Solve for x
    x = 150,400,878.48/18,551.96
  6. Step 6: Final answer
    x = 8,107.01

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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.