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Finding the Fourth Proportional to 74,791.52, 112,174.32 and 19,387.52

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Solution

The fourth proportional to 74,791.52, 112,174.32 and 19,387.52 is: 29,077.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,791.52 : 112,174.32 = 19,387.52 : x
  2. Step 2: Convert to fraction form
    74,791.52/112,174.32 = 19,387.52/x
  3. Step 3: Cross multiply
    74,791.52x = 112,174.32 × 19,387.52
  4. Step 4: Simplify right side
    74,791.52x = 2,174,781,872.49
  5. Step 5: Solve for x
    x = 2,174,781,872.49/74,791.52
  6. Step 6: Final answer
    x = 29,077.92

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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.