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Finding the Fourth Proportional to 10,866.15, 16,300.13 and 3,471.66

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Solution

The fourth proportional to 10,866.15, 16,300.13 and 3,471.66 is: 5,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866.15 : 16,300.13 = 3,471.66 : x
  2. Step 2: Convert to fraction form
    10,866.15/16,300.13 = 3,471.66/x
  3. Step 3: Cross multiply
    10,866.15x = 16,300.13 × 3,471.66
  4. Step 4: Simplify right side
    10,866.15x = 56,588,491.96
  5. Step 5: Solve for x
    x = 56,588,491.96/10,866.15
  6. Step 6: Final answer
    x = 5,207.78

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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.