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Finding the Fourth Proportional to 19,819.73, 27,359.94 and 13,874.73

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Solution

The fourth proportional to 19,819.73, 27,359.94 and 13,874.73 is: 19,153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.73 : 27,359.94 = 13,874.73 : x
  2. Step 2: Convert to fraction form
    19,819.73/27,359.94 = 13,874.73/x
  3. Step 3: Cross multiply
    19,819.73x = 27,359.94 × 13,874.73
  4. Step 4: Simplify right side
    19,819.73x = 379,611,780.32
  5. Step 5: Solve for x
    x = 379,611,780.32/19,819.73
  6. Step 6: Final answer
    x = 19,153.23

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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.