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Finding the Fourth Proportional to 11,293.76, 16,911.48 and 10,039.88

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Solution

The fourth proportional to 11,293.76, 16,911.48 and 10,039.88 is: 15,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,293.76 : 16,911.48 = 10,039.88 : x
  2. Step 2: Convert to fraction form
    11,293.76/16,911.48 = 10,039.88/x
  3. Step 3: Cross multiply
    11,293.76x = 16,911.48 × 10,039.88
  4. Step 4: Simplify right side
    11,293.76x = 169,789,229.82
  5. Step 5: Solve for x
    x = 169,789,229.82/11,293.76
  6. Step 6: Final answer
    x = 15,033.90

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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.