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Finding the Fourth Proportional to 308,537.64, 425,791.62 and 174,410.28

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Solution

The fourth proportional to 308,537.64, 425,791.62 and 174,410.28 is: 240,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,537.64 : 425,791.62 = 174,410.28 : x
  2. Step 2: Convert to fraction form
    308,537.64/425,791.62 = 174,410.28/x
  3. Step 3: Cross multiply
    308,537.64x = 425,791.62 × 174,410.28
  4. Step 4: Simplify right side
    308,537.64x = 74,262,435,665.85
  5. Step 5: Solve for x
    x = 74,262,435,665.85/308,537.64
  6. Step 6: Final answer
    x = 240,691.66

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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.