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Finding the Fourth Proportional to 8,571.48, 11,832.95 and 8,113.62

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Solution

The fourth proportional to 8,571.48, 11,832.95 and 8,113.62 is: 11,200.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.48 : 11,832.95 = 8,113.62 : x
  2. Step 2: Convert to fraction form
    8,571.48/11,832.95 = 8,113.62/x
  3. Step 3: Cross multiply
    8,571.48x = 11,832.95 × 8,113.62
  4. Step 4: Simplify right side
    8,571.48x = 96,008,124.44
  5. Step 5: Solve for x
    x = 96,008,124.44/8,571.48
  6. Step 6: Final answer
    x = 11,200.89

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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.