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Finding the Fourth Proportional to 12,473.88, 18,714.33 and 5,454.51

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Solution

The fourth proportional to 12,473.88, 18,714.33 and 5,454.51 is: 8,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.88 : 18,714.33 = 5,454.51 : x
  2. Step 2: Convert to fraction form
    12,473.88/18,714.33 = 5,454.51/x
  3. Step 3: Cross multiply
    12,473.88x = 18,714.33 × 5,454.51
  4. Step 4: Simplify right side
    12,473.88x = 102,077,500.13
  5. Step 5: Solve for x
    x = 102,077,500.13/12,473.88
  6. Step 6: Final answer
    x = 8,183.30

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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.