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Finding the Fourth Proportional to 251,222.70, 346,690.06 and 138,045.44

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Solution

The fourth proportional to 251,222.70, 346,690.06 and 138,045.44 is: 190,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,222.70 : 346,690.06 = 138,045.44 : x
  2. Step 2: Convert to fraction form
    251,222.70/346,690.06 = 138,045.44/x
  3. Step 3: Cross multiply
    251,222.70x = 346,690.06 × 138,045.44
  4. Step 4: Simplify right side
    251,222.70x = 47,858,981,876.33
  5. Step 5: Solve for x
    x = 47,858,981,876.33/251,222.70
  6. Step 6: Final answer
    x = 190,504.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.