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Finding the Fourth Proportional to 7,191.95, 10,787.21 and 2,261.46

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Solution

The fourth proportional to 7,191.95, 10,787.21 and 2,261.46 is: 3,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.95 : 10,787.21 = 2,261.46 : x
  2. Step 2: Convert to fraction form
    7,191.95/10,787.21 = 2,261.46/x
  3. Step 3: Cross multiply
    7,191.95x = 10,787.21 × 2,261.46
  4. Step 4: Simplify right side
    7,191.95x = 24,394,832.62
  5. Step 5: Solve for x
    x = 24,394,832.62/7,191.95
  6. Step 6: Final answer
    x = 3,391.97

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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.