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Finding the Fourth Proportional to 3,596.96, 5,397.60 and 1,405.92

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Solution

The fourth proportional to 3,596.96, 5,397.60 and 1,405.92 is: 2,109.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,596.96 : 5,397.60 = 1,405.92 : x
  2. Step 2: Convert to fraction form
    3,596.96/5,397.60 = 1,405.92/x
  3. Step 3: Cross multiply
    3,596.96x = 5,397.60 × 1,405.92
  4. Step 4: Simplify right side
    3,596.96x = 7,588,593.79
  5. Step 5: Solve for x
    x = 7,588,593.79/3,596.96
  6. Step 6: Final answer
    x = 2,109.72

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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.