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Finding the Fourth Proportional to 3,513.92, 5,269.12 and 1,173.12

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Solution

The fourth proportional to 3,513.92, 5,269.12 and 1,173.12 is: 1,759.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.92 : 5,269.12 = 1,173.12 : x
  2. Step 2: Convert to fraction form
    3,513.92/5,269.12 = 1,173.12/x
  3. Step 3: Cross multiply
    3,513.92x = 5,269.12 × 1,173.12
  4. Step 4: Simplify right side
    3,513.92x = 6,181,310.05
  5. Step 5: Solve for x
    x = 6,181,310.05/3,513.92
  6. Step 6: Final answer
    x = 1,759.09

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1.5x scale

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.