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Finding the Fourth Proportional to 3,708.96, 5,125.44 and 2,929.20

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Solution

The fourth proportional to 3,708.96, 5,125.44 and 2,929.20 is: 4,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.96 : 5,125.44 = 2,929.20 : x
  2. Step 2: Convert to fraction form
    3,708.96/5,125.44 = 2,929.20/x
  3. Step 3: Cross multiply
    3,708.96x = 5,125.44 × 2,929.20
  4. Step 4: Simplify right side
    3,708.96x = 15,013,438.85
  5. Step 5: Solve for x
    x = 15,013,438.85/3,708.96
  6. Step 6: Final answer
    x = 4,047.88

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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.