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Finding the Fourth Proportional to 58,379.50, 87,561.04 and 18,936.96

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Solution

The fourth proportional to 58,379.50, 87,561.04 and 18,936.96 is: 28,402.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,379.50 : 87,561.04 = 18,936.96 : x
  2. Step 2: Convert to fraction form
    58,379.50/87,561.04 = 18,936.96/x
  3. Step 3: Cross multiply
    58,379.50x = 87,561.04 × 18,936.96
  4. Step 4: Simplify right side
    58,379.50x = 1,658,139,912.04
  5. Step 5: Solve for x
    x = 1,658,139,912.04/58,379.50
  6. Step 6: Final answer
    x = 28,402.78

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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.