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Finding the Fourth Proportional to 251,227.44, 346,689.90 and 138,047.76

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Solution

The fourth proportional to 251,227.44, 346,689.90 and 138,047.76 is: 190,503.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,227.44 : 346,689.90 = 138,047.76 : x
  2. Step 2: Convert to fraction form
    251,227.44/346,689.90 = 138,047.76/x
  3. Step 3: Cross multiply
    251,227.44x = 346,689.90 × 138,047.76
  4. Step 4: Simplify right side
    251,227.44x = 47,859,764,109.62
  5. Step 5: Solve for x
    x = 47,859,764,109.62/251,227.44
  6. Step 6: Final answer
    x = 190,503.73

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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.