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Finding the Fourth Proportional to 20,363.91, 30,545.91 and 5,572.98

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Solution

The fourth proportional to 20,363.91, 30,545.91 and 5,572.98 is: 8,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.91 : 30,545.91 = 5,572.98 : x
  2. Step 2: Convert to fraction form
    20,363.91/30,545.91 = 5,572.98/x
  3. Step 3: Cross multiply
    20,363.91x = 30,545.91 × 5,572.98
  4. Step 4: Simplify right side
    20,363.91x = 170,231,745.51
  5. Step 5: Solve for x
    x = 170,231,745.51/20,363.91
  6. Step 6: Final answer
    x = 8,359.48

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1.5x scale

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.