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Finding the Fourth Proportional to 19,819.06, 27,351.14 and 11,859.74

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Solution

The fourth proportional to 19,819.06, 27,351.14 and 11,859.74 is: 16,366.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.06 : 27,351.14 = 11,859.74 : x
  2. Step 2: Convert to fraction form
    19,819.06/27,351.14 = 11,859.74/x
  3. Step 3: Cross multiply
    19,819.06x = 27,351.14 × 11,859.74
  4. Step 4: Simplify right side
    19,819.06x = 324,377,409.10
  5. Step 5: Solve for x
    x = 324,377,409.10/19,819.06
  6. Step 6: Final answer
    x = 16,366.94

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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.