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Finding the Fourth Proportional to 13,809.68, 20,714.60 and 5,044.56

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Solution

The fourth proportional to 13,809.68, 20,714.60 and 5,044.56 is: 7,566.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.68 : 20,714.60 = 5,044.56 : x
  2. Step 2: Convert to fraction form
    13,809.68/20,714.60 = 5,044.56/x
  3. Step 3: Cross multiply
    13,809.68x = 20,714.60 × 5,044.56
  4. Step 4: Simplify right side
    13,809.68x = 104,496,042.58
  5. Step 5: Solve for x
    x = 104,496,042.58/13,809.68
  6. Step 6: Final answer
    x = 7,566.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.