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Finding the Fourth Proportional to 404,076.28, 557,691 and 243,094

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Solution

The fourth proportional to 404,076.28, 557,691 and 243,094 is: 335,509.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,076.28 : 557,691 = 243,094 : x
  2. Step 2: Convert to fraction form
    404,076.28/557,691 = 243,094/x
  3. Step 3: Cross multiply
    404,076.28x = 557,691 × 243,094
  4. Step 4: Simplify right side
    404,076.28x = 135,571,335,954
  5. Step 5: Solve for x
    x = 135,571,335,954/404,076.28
  6. Step 6: Final answer
    x = 335,509.27

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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.