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Finding the Fourth Proportional to 3,693.76, 5,540.66 and 1,353.94

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Solution

The fourth proportional to 3,693.76, 5,540.66 and 1,353.94 is: 2,030.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.76 : 5,540.66 = 1,353.94 : x
  2. Step 2: Convert to fraction form
    3,693.76/5,540.66 = 1,353.94/x
  3. Step 3: Cross multiply
    3,693.76x = 5,540.66 × 1,353.94
  4. Step 4: Simplify right side
    3,693.76x = 7,501,725.05
  5. Step 5: Solve for x
    x = 7,501,725.05/3,693.76
  6. Step 6: Final answer
    x = 2,030.92

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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.