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Finding the Fourth Proportional to 3,593.62, 5,390.42 and 1,128.62

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Solution

The fourth proportional to 3,593.62, 5,390.42 and 1,128.62 is: 1,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.62 : 5,390.42 = 1,128.62 : x
  2. Step 2: Convert to fraction form
    3,593.62/5,390.42 = 1,128.62/x
  3. Step 3: Cross multiply
    3,593.62x = 5,390.42 × 1,128.62
  4. Step 4: Simplify right side
    3,593.62x = 6,083,730.18
  5. Step 5: Solve for x
    x = 6,083,730.18/3,593.62
  6. Step 6: Final answer
    x = 1,692.93

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Similar ratio
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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.