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Finding the Fourth Proportional to 303,933.20, 455,243.70 and 251,445.20

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Solution

The fourth proportional to 303,933.20, 455,243.70 and 251,445.20 is: 376,625.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,933.20 : 455,243.70 = 251,445.20 : x
  2. Step 2: Convert to fraction form
    303,933.20/455,243.70 = 251,445.20/x
  3. Step 3: Cross multiply
    303,933.20x = 455,243.70 × 251,445.20
  4. Step 4: Simplify right side
    303,933.20x = 114,468,843,195.24
  5. Step 5: Solve for x
    x = 114,468,843,195.24/303,933.20
  6. Step 6: Final answer
    x = 376,625.01

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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.