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Finding the Fourth Proportional to 373,709.39, 515,720.37 and 203,943.51

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Solution

The fourth proportional to 373,709.39, 515,720.37 and 203,943.51 is: 281,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,709.39 : 515,720.37 = 203,943.51 : x
  2. Step 2: Convert to fraction form
    373,709.39/515,720.37 = 203,943.51/x
  3. Step 3: Cross multiply
    373,709.39x = 515,720.37 × 203,943.51
  4. Step 4: Simplify right side
    373,709.39x = 105,177,822,436.30
  5. Step 5: Solve for x
    x = 105,177,822,436.30/373,709.39
  6. Step 6: Final answer
    x = 281,442.82

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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.