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Finding the Fourth Proportional to 5,280.46, 7,286.74 and 2,922.46

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Solution

The fourth proportional to 5,280.46, 7,286.74 and 2,922.46 is: 4,032.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.46 : 7,286.74 = 2,922.46 : x
  2. Step 2: Convert to fraction form
    5,280.46/7,286.74 = 2,922.46/x
  3. Step 3: Cross multiply
    5,280.46x = 7,286.74 × 2,922.46
  4. Step 4: Simplify right side
    5,280.46x = 21,295,206.18
  5. Step 5: Solve for x
    x = 21,295,206.18/5,280.46
  6. Step 6: Final answer
    x = 4,032.83

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1.5x scale

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.