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Finding the Fourth Proportional to 303,921.70, 455,226.45 and 251,433.70

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Solution

The fourth proportional to 303,921.70, 455,226.45 and 251,433.70 is: 376,607.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,921.70 : 455,226.45 = 251,433.70 : x
  2. Step 2: Convert to fraction form
    303,921.70/455,226.45 = 251,433.70/x
  3. Step 3: Cross multiply
    303,921.70x = 455,226.45 × 251,433.70
  4. Step 4: Simplify right side
    303,921.70x = 114,459,270,661.37
  5. Step 5: Solve for x
    x = 114,459,270,661.37/303,921.70
  6. Step 6: Final answer
    x = 376,607.76

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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.