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Finding the Fourth Proportional to 19,819.26, 27,351.27 and 10,866.78

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Solution

The fourth proportional to 19,819.26, 27,351.27 and 10,866.78 is: 14,996.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.26 : 27,351.27 = 10,866.78 : x
  2. Step 2: Convert to fraction form
    19,819.26/27,351.27 = 10,866.78/x
  3. Step 3: Cross multiply
    19,819.26x = 27,351.27 × 10,866.78
  4. Step 4: Simplify right side
    19,819.26x = 297,220,233.81
  5. Step 5: Solve for x
    x = 297,220,233.81/19,819.26
  6. Step 6: Final answer
    x = 14,996.54

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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.