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Finding the Fourth Proportional to 6,620.97, 9,940.15 and 4,439.46

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Solution

The fourth proportional to 6,620.97, 9,940.15 and 4,439.46 is: 6,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.97 : 9,940.15 = 4,439.46 : x
  2. Step 2: Convert to fraction form
    6,620.97/9,940.15 = 4,439.46/x
  3. Step 3: Cross multiply
    6,620.97x = 9,940.15 × 4,439.46
  4. Step 4: Simplify right side
    6,620.97x = 44,128,916.17
  5. Step 5: Solve for x
    x = 44,128,916.17/6,620.97
  6. Step 6: Final answer
    x = 6,665.02

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1.5x scale

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.