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Finding the Fourth Proportional to 10,956.68, 16,423.16 and 4,375.63

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Solution

The fourth proportional to 10,956.68, 16,423.16 and 4,375.63 is: 6,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.68 : 16,423.16 = 4,375.63 : x
  2. Step 2: Convert to fraction form
    10,956.68/16,423.16 = 4,375.63/x
  3. Step 3: Cross multiply
    10,956.68x = 16,423.16 × 4,375.63
  4. Step 4: Simplify right side
    10,956.68x = 71,861,589.48
  5. Step 5: Solve for x
    x = 71,861,589.48/10,956.68
  6. Step 6: Final answer
    x = 6,558.70

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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.