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Finding the Fourth Proportional to 5,371.92, 7,409.88 and 3,881.52

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Solution

The fourth proportional to 5,371.92, 7,409.88 and 3,881.52 is: 5,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,371.92 : 7,409.88 = 3,881.52 : x
  2. Step 2: Convert to fraction form
    5,371.92/7,409.88 = 3,881.52/x
  3. Step 3: Cross multiply
    5,371.92x = 7,409.88 × 3,881.52
  4. Step 4: Simplify right side
    5,371.92x = 28,761,597.42
  5. Step 5: Solve for x
    x = 28,761,597.42/5,371.92
  6. Step 6: Final answer
    x = 5,354.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.