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Finding the Fourth Proportional to 251,692.64, 377,426 and 74,137.44

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Solution

The fourth proportional to 251,692.64, 377,426 and 74,137.44 is: 111,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,692.64 : 377,426 = 74,137.44 : x
  2. Step 2: Convert to fraction form
    251,692.64/377,426 = 74,137.44/x
  3. Step 3: Cross multiply
    251,692.64x = 377,426 × 74,137.44
  4. Step 4: Simplify right side
    251,692.64x = 27,981,397,429.44
  5. Step 5: Solve for x
    x = 27,981,397,429.44/251,692.64
  6. Step 6: Final answer
    x = 111,172.89

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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.