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Finding the Fourth Proportional to 18,483.86, 27,736.77 and 6,805.28

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Solution

The fourth proportional to 18,483.86, 27,736.77 and 6,805.28 is: 10,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.86 : 27,736.77 = 6,805.28 : x
  2. Step 2: Convert to fraction form
    18,483.86/27,736.77 = 6,805.28/x
  3. Step 3: Cross multiply
    18,483.86x = 27,736.77 × 6,805.28
  4. Step 4: Simplify right side
    18,483.86x = 188,756,486.15
  5. Step 5: Solve for x
    x = 188,756,486.15/18,483.86
  6. Step 6: Final answer
    x = 10,211.96

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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.