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Finding the Fourth Proportional to 7,201.61, 9,935.12 and 4,367.90

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Solution

The fourth proportional to 7,201.61, 9,935.12 and 4,367.90 is: 6,025.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.61 : 9,935.12 = 4,367.90 : x
  2. Step 2: Convert to fraction form
    7,201.61/9,935.12 = 4,367.90/x
  3. Step 3: Cross multiply
    7,201.61x = 9,935.12 × 4,367.90
  4. Step 4: Simplify right side
    7,201.61x = 43,395,596.73
  5. Step 5: Solve for x
    x = 43,395,596.73/7,201.61
  6. Step 6: Final answer
    x = 6,025.82

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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.