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Finding the Fourth Proportional to 56,362.71, 84,545.61 and 16,919.83

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Solution

The fourth proportional to 56,362.71, 84,545.61 and 16,919.83 is: 25,380.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,362.71 : 84,545.61 = 16,919.83 : x
  2. Step 2: Convert to fraction form
    56,362.71/84,545.61 = 16,919.83/x
  3. Step 3: Cross multiply
    56,362.71x = 84,545.61 × 16,919.83
  4. Step 4: Simplify right side
    56,362.71x = 1,430,497,348.45
  5. Step 5: Solve for x
    x = 1,430,497,348.45/56,362.71
  6. Step 6: Final answer
    x = 25,380.21

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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.