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Finding the Fourth Proportional to 11,336.72, 16,980.44 and 5,481

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Solution

The fourth proportional to 11,336.72, 16,980.44 and 5,481 is: 8,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,336.72 : 16,980.44 = 5,481 : x
  2. Step 2: Convert to fraction form
    11,336.72/16,980.44 = 5,481/x
  3. Step 3: Cross multiply
    11,336.72x = 16,980.44 × 5,481
  4. Step 4: Simplify right side
    11,336.72x = 93,069,764.24
  5. Step 5: Solve for x
    x = 93,069,764.24/11,336.72
  6. Step 6: Final answer
    x = 8,209.59

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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.