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Finding the Fourth Proportional to 251,808.37, 347,515.19 and 138,651.37

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Solution

The fourth proportional to 251,808.37, 347,515.19 and 138,651.37 is: 191,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,808.37 : 347,515.19 = 138,651.37 : x
  2. Step 2: Convert to fraction form
    251,808.37/347,515.19 = 138,651.37/x
  3. Step 3: Cross multiply
    251,808.37x = 347,515.19 × 138,651.37
  4. Step 4: Simplify right side
    251,808.37x = 48,183,456,496.05
  5. Step 5: Solve for x
    x = 48,183,456,496.05/251,808.37
  6. Step 6: Final answer
    x = 191,349.70

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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.