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Finding the Fourth Proportional to 128,042.34, 192,058.65 and 34,550.52

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Solution

The fourth proportional to 128,042.34, 192,058.65 and 34,550.52 is: 51,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.34 : 192,058.65 = 34,550.52 : x
  2. Step 2: Convert to fraction form
    128,042.34/192,058.65 = 34,550.52/x
  3. Step 3: Cross multiply
    128,042.34x = 192,058.65 × 34,550.52
  4. Step 4: Simplify right side
    128,042.34x = 6,635,726,228.00
  5. Step 5: Solve for x
    x = 6,635,726,228.00/128,042.34
  6. Step 6: Final answer
    x = 51,824.47

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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.