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Finding the Fourth Proportional to 10,944.45, 16,392.05 and 7,672.16

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Solution

The fourth proportional to 10,944.45, 16,392.05 and 7,672.16 is: 11,490.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,944.45 : 16,392.05 = 7,672.16 : x
  2. Step 2: Convert to fraction form
    10,944.45/16,392.05 = 7,672.16/x
  3. Step 3: Cross multiply
    10,944.45x = 16,392.05 × 7,672.16
  4. Step 4: Simplify right side
    10,944.45x = 125,762,310.01
  5. Step 5: Solve for x
    x = 125,762,310.01/10,944.45
  6. Step 6: Final answer
    x = 11,490.97

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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.