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Finding the Fourth Proportional to 4,376.92, 6,563.46 and 1,639

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Solution

The fourth proportional to 4,376.92, 6,563.46 and 1,639 is: 2,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,376.92 : 6,563.46 = 1,639 : x
  2. Step 2: Convert to fraction form
    4,376.92/6,563.46 = 1,639/x
  3. Step 3: Cross multiply
    4,376.92x = 6,563.46 × 1,639
  4. Step 4: Simplify right side
    4,376.92x = 10,757,510.94
  5. Step 5: Solve for x
    x = 10,757,510.94/4,376.92
  6. Step 6: Final answer
    x = 2,457.78

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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.