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Finding the Fourth Proportional to 401,086.07, 601,223.70 and 251,431.38

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Solution

The fourth proportional to 401,086.07, 601,223.70 and 251,431.38 is: 376,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,086.07 : 601,223.70 = 251,431.38 : x
  2. Step 2: Convert to fraction form
    401,086.07/601,223.70 = 251,431.38/x
  3. Step 3: Cross multiply
    401,086.07x = 601,223.70 × 251,431.38
  4. Step 4: Simplify right side
    401,086.07x = 151,166,504,579.71
  5. Step 5: Solve for x
    x = 151,166,504,579.71/401,086.07
  6. Step 6: Final answer
    x = 376,892.93

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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.