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Finding the Fourth Proportional to 56,143.70, 84,227.70 and 16,704.80

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Solution

The fourth proportional to 56,143.70, 84,227.70 and 16,704.80 is: 25,060.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,143.70 : 84,227.70 = 16,704.80 : x
  2. Step 2: Convert to fraction form
    56,143.70/84,227.70 = 16,704.80/x
  3. Step 3: Cross multiply
    56,143.70x = 84,227.70 × 16,704.80
  4. Step 4: Simplify right side
    56,143.70x = 1,407,006,882.96
  5. Step 5: Solve for x
    x = 1,407,006,882.96/56,143.70
  6. Step 6: Final answer
    x = 25,060.82

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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.