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Finding the Fourth Proportional to 5,351.56, 7,384.97 and 2,961.63

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Solution

The fourth proportional to 5,351.56, 7,384.97 and 2,961.63 is: 4,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.56 : 7,384.97 = 2,961.63 : x
  2. Step 2: Convert to fraction form
    5,351.56/7,384.97 = 2,961.63/x
  3. Step 3: Cross multiply
    5,351.56x = 7,384.97 × 2,961.63
  4. Step 4: Simplify right side
    5,351.56x = 21,871,565.44
  5. Step 5: Solve for x
    x = 21,871,565.44/5,351.56
  6. Step 6: Final answer
    x = 4,086.95

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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.