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Finding the Fourth Proportional to 18,884.48, 28,331 and 6,235.12

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Solution

The fourth proportional to 18,884.48, 28,331 and 6,235.12 is: 9,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.48 : 28,331 = 6,235.12 : x
  2. Step 2: Convert to fraction form
    18,884.48/28,331 = 6,235.12/x
  3. Step 3: Cross multiply
    18,884.48x = 28,331 × 6,235.12
  4. Step 4: Simplify right side
    18,884.48x = 176,647,184.72
  5. Step 5: Solve for x
    x = 176,647,184.72/18,884.48
  6. Step 6: Final answer
    x = 9,354.09

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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.