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Finding the Fourth Proportional to 5,600.91, 7,728.72 and 3,082.98

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Solution

The fourth proportional to 5,600.91, 7,728.72 and 3,082.98 is: 4,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.91 : 7,728.72 = 3,082.98 : x
  2. Step 2: Convert to fraction form
    5,600.91/7,728.72 = 3,082.98/x
  3. Step 3: Cross multiply
    5,600.91x = 7,728.72 × 3,082.98
  4. Step 4: Simplify right side
    5,600.91x = 23,827,489.19
  5. Step 5: Solve for x
    x = 23,827,489.19/5,600.91
  6. Step 6: Final answer
    x = 4,254.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.