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Finding the Fourth Proportional to 45,671.15, 68,516.31 and 19,375.31

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Solution

The fourth proportional to 45,671.15, 68,516.31 and 19,375.31 is: 29,067.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,671.15 : 68,516.31 = 19,375.31 : x
  2. Step 2: Convert to fraction form
    45,671.15/68,516.31 = 19,375.31/x
  3. Step 3: Cross multiply
    45,671.15x = 68,516.31 × 19,375.31
  4. Step 4: Simplify right side
    45,671.15x = 1,327,524,746.31
  5. Step 5: Solve for x
    x = 1,327,524,746.31/45,671.15
  6. Step 6: Final answer
    x = 29,067.03

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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.