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Finding the Fourth Proportional to 4,939.95, 7,405.20 and 2,472.29

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Solution

The fourth proportional to 4,939.95, 7,405.20 and 2,472.29 is: 3,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.95 : 7,405.20 = 2,472.29 : x
  2. Step 2: Convert to fraction form
    4,939.95/7,405.20 = 2,472.29/x
  3. Step 3: Cross multiply
    4,939.95x = 7,405.20 × 2,472.29
  4. Step 4: Simplify right side
    4,939.95x = 18,307,764.88
  5. Step 5: Solve for x
    x = 18,307,764.88/4,939.95
  6. Step 6: Final answer
    x = 3,706.06

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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.