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Finding the Fourth Proportional to 15,168.43, 20,932.41 and 8,796.25

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Solution

The fourth proportional to 15,168.43, 20,932.41 and 8,796.25 is: 12,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.43 : 20,932.41 = 8,796.25 : x
  2. Step 2: Convert to fraction form
    15,168.43/20,932.41 = 8,796.25/x
  3. Step 3: Cross multiply
    15,168.43x = 20,932.41 × 8,796.25
  4. Step 4: Simplify right side
    15,168.43x = 184,126,711.46
  5. Step 5: Solve for x
    x = 184,126,711.46/15,168.43
  6. Step 6: Final answer
    x = 12,138.81

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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.