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Finding the Fourth Proportional to 5,792.46, 7,993.60 and 3,139.84

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Solution

The fourth proportional to 5,792.46, 7,993.60 and 3,139.84 is: 4,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,792.46 : 7,993.60 = 3,139.84 : x
  2. Step 2: Convert to fraction form
    5,792.46/7,993.60 = 3,139.84/x
  3. Step 3: Cross multiply
    5,792.46x = 7,993.60 × 3,139.84
  4. Step 4: Simplify right side
    5,792.46x = 25,098,625.02
  5. Step 5: Solve for x
    x = 25,098,625.02/5,792.46
  6. Step 6: Final answer
    x = 4,332.98

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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.