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Finding the Fourth Proportional to 18,063.88, 24,933.92 and 12,687.62

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Solution

The fourth proportional to 18,063.88, 24,933.92 and 12,687.62 is: 17,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.88 : 24,933.92 = 12,687.62 : x
  2. Step 2: Convert to fraction form
    18,063.88/24,933.92 = 12,687.62/x
  3. Step 3: Cross multiply
    18,063.88x = 24,933.92 × 12,687.62
  4. Step 4: Simplify right side
    18,063.88x = 316,351,913.96
  5. Step 5: Solve for x
    x = 316,351,913.96/18,063.88
  6. Step 6: Final answer
    x = 17,512.96

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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.