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Finding the Fourth Proportional to 104,791.86, 144,606.87 and 57,042.36

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Solution

The fourth proportional to 104,791.86, 144,606.87 and 57,042.36 is: 78,715.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,791.86 : 144,606.87 = 57,042.36 : x
  2. Step 2: Convert to fraction form
    104,791.86/144,606.87 = 57,042.36/x
  3. Step 3: Cross multiply
    104,791.86x = 144,606.87 × 57,042.36
  4. Step 4: Simplify right side
    104,791.86x = 8,248,717,137.01
  5. Step 5: Solve for x
    x = 8,248,717,137.01/104,791.86
  6. Step 6: Final answer
    x = 78,715.25

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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.