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Finding the Fourth Proportional to 251,016.76, 376,513.62 and 84,806.20

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Solution

The fourth proportional to 251,016.76, 376,513.62 and 84,806.20 is: 127,205.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,016.76 : 376,513.62 = 84,806.20 : x
  2. Step 2: Convert to fraction form
    251,016.76/376,513.62 = 84,806.20/x
  3. Step 3: Cross multiply
    251,016.76x = 376,513.62 × 84,806.20
  4. Step 4: Simplify right side
    251,016.76x = 31,930,689,360.44
  5. Step 5: Solve for x
    x = 31,930,689,360.44/251,016.76
  6. Step 6: Final answer
    x = 127,205.41

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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.