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Finding the Fourth Proportional to 250,701.78, 376,015.74 and 82,239.91

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Solution

The fourth proportional to 250,701.78, 376,015.74 and 82,239.91 is: 123,347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,701.78 : 376,015.74 = 82,239.91 : x
  2. Step 2: Convert to fraction form
    250,701.78/376,015.74 = 82,239.91/x
  3. Step 3: Cross multiply
    250,701.78x = 376,015.74 × 82,239.91
  4. Step 4: Simplify right side
    250,701.78x = 30,923,499,367.74
  5. Step 5: Solve for x
    x = 30,923,499,367.74/250,701.78
  6. Step 6: Final answer
    x = 123,347.74

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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.