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Finding the Fourth Proportional to 3,593.94, 5,391.32 and 1,128.70

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Solution

The fourth proportional to 3,593.94, 5,391.32 and 1,128.70 is: 1,693.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.94 : 5,391.32 = 1,128.70 : x
  2. Step 2: Convert to fraction form
    3,593.94/5,391.32 = 1,128.70/x
  3. Step 3: Cross multiply
    3,593.94x = 5,391.32 × 1,128.70
  4. Step 4: Simplify right side
    3,593.94x = 6,085,182.88
  5. Step 5: Solve for x
    x = 6,085,182.88/3,593.94
  6. Step 6: Final answer
    x = 1,693.18

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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.