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Finding the Fourth Proportional to 17,078.69, 25,621.13 and 7,723.11

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Solution

The fourth proportional to 17,078.69, 25,621.13 and 7,723.11 is: 11,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,078.69 : 25,621.13 = 7,723.11 : x
  2. Step 2: Convert to fraction form
    17,078.69/25,621.13 = 7,723.11/x
  3. Step 3: Cross multiply
    17,078.69x = 25,621.13 × 7,723.11
  4. Step 4: Simplify right side
    17,078.69x = 197,874,766.70
  5. Step 5: Solve for x
    x = 197,874,766.70/17,078.69
  6. Step 6: Final answer
    x = 11,586.06

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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.