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Finding the Fourth Proportional to 3,593.76, 5,390.64 and 996.72

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Solution

The fourth proportional to 3,593.76, 5,390.64 and 996.72 is: 1,495.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.76 : 5,390.64 = 996.72 : x
  2. Step 2: Convert to fraction form
    3,593.76/5,390.64 = 996.72/x
  3. Step 3: Cross multiply
    3,593.76x = 5,390.64 × 996.72
  4. Step 4: Simplify right side
    3,593.76x = 5,372,958.70
  5. Step 5: Solve for x
    x = 5,372,958.70/3,593.76
  6. Step 6: Final answer
    x = 1,495.08

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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.