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Finding the Fourth Proportional to 62,408.81, 93,613.22 and 20,855.81

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Solution

The fourth proportional to 62,408.81, 93,613.22 and 20,855.81 is: 31,283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,408.81 : 93,613.22 = 20,855.81 : x
  2. Step 2: Convert to fraction form
    62,408.81/93,613.22 = 20,855.81/x
  3. Step 3: Cross multiply
    62,408.81x = 93,613.22 × 20,855.81
  4. Step 4: Simplify right side
    62,408.81x = 1,952,379,737.77
  5. Step 5: Solve for x
    x = 1,952,379,737.77/62,408.81
  6. Step 6: Final answer
    x = 31,283.72

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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.