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Finding the Fourth Proportional to 8,571.68, 11,829.40 and 5,035.92

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Solution

The fourth proportional to 8,571.68, 11,829.40 and 5,035.92 is: 6,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.68 : 11,829.40 = 5,035.92 : x
  2. Step 2: Convert to fraction form
    8,571.68/11,829.40 = 5,035.92/x
  3. Step 3: Cross multiply
    8,571.68x = 11,829.40 × 5,035.92
  4. Step 4: Simplify right side
    8,571.68x = 59,571,912.05
  5. Step 5: Solve for x
    x = 59,571,912.05/8,571.68
  6. Step 6: Final answer
    x = 6,949.85

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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.