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Finding the Fourth Proportional to 356,081.80, 534,209.10 and 251,105.80

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Solution

The fourth proportional to 356,081.80, 534,209.10 and 251,105.80 is: 376,719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,081.80 : 534,209.10 = 251,105.80 : x
  2. Step 2: Convert to fraction form
    356,081.80/534,209.10 = 251,105.80/x
  3. Step 3: Cross multiply
    356,081.80x = 534,209.10 × 251,105.80
  4. Step 4: Simplify right side
    356,081.80x = 134,143,003,422.78
  5. Step 5: Solve for x
    x = 134,143,003,422.78/356,081.80
  6. Step 6: Final answer
    x = 376,719.63

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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.