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Finding the Fourth Proportional to 250,872.78, 376,335.90 and 73,380.72

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Solution

The fourth proportional to 250,872.78, 376,335.90 and 73,380.72 is: 110,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,872.78 : 376,335.90 = 73,380.72 : x
  2. Step 2: Convert to fraction form
    250,872.78/376,335.90 = 73,380.72/x
  3. Step 3: Cross multiply
    250,872.78x = 376,335.90 × 73,380.72
  4. Step 4: Simplify right side
    250,872.78x = 27,615,799,303.85
  5. Step 5: Solve for x
    x = 27,615,799,303.85/250,872.78
  6. Step 6: Final answer
    x = 110,078.90

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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.