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Finding the Fourth Proportional to 19,324.80, 29,118.83 and 15,891.71

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Solution

The fourth proportional to 19,324.80, 29,118.83 and 15,891.71 is: 23,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,324.80 : 29,118.83 = 15,891.71 : x
  2. Step 2: Convert to fraction form
    19,324.80/29,118.83 = 15,891.71/x
  3. Step 3: Cross multiply
    19,324.80x = 29,118.83 × 15,891.71
  4. Step 4: Simplify right side
    19,324.80x = 462,747,776.85
  5. Step 5: Solve for x
    x = 462,747,776.85/19,324.80
  6. Step 6: Final answer
    x = 23,945.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.