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Finding the Fourth Proportional to 18,570.88, 27,855.96 and 4,531

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Solution

The fourth proportional to 18,570.88, 27,855.96 and 4,531 is: 6,796.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.88 : 27,855.96 = 4,531 : x
  2. Step 2: Convert to fraction form
    18,570.88/27,855.96 = 4,531/x
  3. Step 3: Cross multiply
    18,570.88x = 27,855.96 × 4,531
  4. Step 4: Simplify right side
    18,570.88x = 126,215,354.76
  5. Step 5: Solve for x
    x = 126,215,354.76/18,570.88
  6. Step 6: Final answer
    x = 6,796.41

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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.