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Finding the Fourth Proportional to 3,579.62, 5,369.45 and 1,269.50

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Solution

The fourth proportional to 3,579.62, 5,369.45 and 1,269.50 is: 1,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.62 : 5,369.45 = 1,269.50 : x
  2. Step 2: Convert to fraction form
    3,579.62/5,369.45 = 1,269.50/x
  3. Step 3: Cross multiply
    3,579.62x = 5,369.45 × 1,269.50
  4. Step 4: Simplify right side
    3,579.62x = 6,816,516.78
  5. Step 5: Solve for x
    x = 6,816,516.78/3,579.62
  6. Step 6: Final answer
    x = 1,904.26

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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.