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Finding the Fourth Proportional to 403,791.78, 557,232.67 and 234,124.32

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Solution

The fourth proportional to 403,791.78, 557,232.67 and 234,124.32 is: 323,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,791.78 : 557,232.67 = 234,124.32 : x
  2. Step 2: Convert to fraction form
    403,791.78/557,232.67 = 234,124.32/x
  3. Step 3: Cross multiply
    403,791.78x = 557,232.67 × 234,124.32
  4. Step 4: Simplify right side
    403,791.78x = 130,461,719,945.53
  5. Step 5: Solve for x
    x = 130,461,719,945.53/403,791.78
  6. Step 6: Final answer
    x = 323,091.57

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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.