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Finding the Fourth Proportional to 18,797.86, 28,199.19 and 6,312.52

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Solution

The fourth proportional to 18,797.86, 28,199.19 and 6,312.52 is: 9,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.86 : 28,199.19 = 6,312.52 : x
  2. Step 2: Convert to fraction form
    18,797.86/28,199.19 = 6,312.52/x
  3. Step 3: Cross multiply
    18,797.86x = 28,199.19 × 6,312.52
  4. Step 4: Simplify right side
    18,797.86x = 178,007,950.86
  5. Step 5: Solve for x
    x = 178,007,950.86/18,797.86
  6. Step 6: Final answer
    x = 9,469.59

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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.