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Finding the Fourth Proportional to 18,794.86, 28,192.50 and 4,943.86

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Solution

The fourth proportional to 18,794.86, 28,192.50 and 4,943.86 is: 7,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.86 : 28,192.50 = 4,943.86 : x
  2. Step 2: Convert to fraction form
    18,794.86/28,192.50 = 4,943.86/x
  3. Step 3: Cross multiply
    18,794.86x = 28,192.50 × 4,943.86
  4. Step 4: Simplify right side
    18,794.86x = 139,379,773.05
  5. Step 5: Solve for x
    x = 139,379,773.05/18,794.86
  6. Step 6: Final answer
    x = 7,415.85

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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.