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Finding the Fourth Proportional to 14,872.17, 20,523.45 and 8,157.48

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Solution

The fourth proportional to 14,872.17, 20,523.45 and 8,157.48 is: 11,257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,872.17 : 20,523.45 = 8,157.48 : x
  2. Step 2: Convert to fraction form
    14,872.17/20,523.45 = 8,157.48/x
  3. Step 3: Cross multiply
    14,872.17x = 20,523.45 × 8,157.48
  4. Step 4: Simplify right side
    14,872.17x = 167,419,632.91
  5. Step 5: Solve for x
    x = 167,419,632.91/14,872.17
  6. Step 6: Final answer
    x = 11,257.24

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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.