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Finding the Fourth Proportional to 7,235.69, 10,845.15 and 3,331.89

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Solution

The fourth proportional to 7,235.69, 10,845.15 and 3,331.89 is: 4,993.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.69 : 10,845.15 = 3,331.89 : x
  2. Step 2: Convert to fraction form
    7,235.69/10,845.15 = 3,331.89/x
  3. Step 3: Cross multiply
    7,235.69x = 10,845.15 × 3,331.89
  4. Step 4: Simplify right side
    7,235.69x = 36,134,846.83
  5. Step 5: Solve for x
    x = 36,134,846.83/7,235.69
  6. Step 6: Final answer
    x = 4,993.98

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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.