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Finding the Fourth Proportional to 199,893.54, 275,826.41 and 128,370.44

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Solution

The fourth proportional to 199,893.54, 275,826.41 and 128,370.44 is: 177,134.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,893.54 : 275,826.41 = 128,370.44 : x
  2. Step 2: Convert to fraction form
    199,893.54/275,826.41 = 128,370.44/x
  3. Step 3: Cross multiply
    199,893.54x = 275,826.41 × 128,370.44
  4. Step 4: Simplify right side
    199,893.54x = 35,407,955,594.34
  5. Step 5: Solve for x
    x = 35,407,955,594.34/199,893.54
  6. Step 6: Final answer
    x = 177,134.07

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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.