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Finding the Fourth Proportional to 3,562.92, 4,916.68 and 1,990.96

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Solution

The fourth proportional to 3,562.92, 4,916.68 and 1,990.96 is: 2,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,562.92 : 4,916.68 = 1,990.96 : x
  2. Step 2: Convert to fraction form
    3,562.92/4,916.68 = 1,990.96/x
  3. Step 3: Cross multiply
    3,562.92x = 4,916.68 × 1,990.96
  4. Step 4: Simplify right side
    3,562.92x = 9,788,913.21
  5. Step 5: Solve for x
    x = 9,788,913.21/3,562.92
  6. Step 6: Final answer
    x = 2,747.44

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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.