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Finding the Fourth Proportional to 9,372.80, 14,060.16 and 3,216

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Solution

The fourth proportional to 9,372.80, 14,060.16 and 3,216 is: 4,824.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.80 : 14,060.16 = 3,216 : x
  2. Step 2: Convert to fraction form
    9,372.80/14,060.16 = 3,216/x
  3. Step 3: Cross multiply
    9,372.80x = 14,060.16 × 3,216
  4. Step 4: Simplify right side
    9,372.80x = 45,217,474.56
  5. Step 5: Solve for x
    x = 45,217,474.56/9,372.80
  6. Step 6: Final answer
    x = 4,824.33

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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.