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Finding the Fourth Proportional to 19,626.48, 29,390.49 and 11,724.12

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Solution

The fourth proportional to 19,626.48, 29,390.49 and 11,724.12 is: 17,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,626.48 : 29,390.49 = 11,724.12 : x
  2. Step 2: Convert to fraction form
    19,626.48/29,390.49 = 11,724.12/x
  3. Step 3: Cross multiply
    19,626.48x = 29,390.49 × 11,724.12
  4. Step 4: Simplify right side
    19,626.48x = 344,577,631.62
  5. Step 5: Solve for x
    x = 344,577,631.62/19,626.48
  6. Step 6: Final answer
    x = 17,556.77

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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.