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Finding the Fourth Proportional to 354,626.48, 489,385.32 and 193,481.84

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Solution

The fourth proportional to 354,626.48, 489,385.32 and 193,481.84 is: 267,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,626.48 : 489,385.32 = 193,481.84 : x
  2. Step 2: Convert to fraction form
    354,626.48/489,385.32 = 193,481.84/x
  3. Step 3: Cross multiply
    354,626.48x = 489,385.32 × 193,481.84
  4. Step 4: Simplify right side
    354,626.48x = 94,687,172,182.59
  5. Step 5: Solve for x
    x = 94,687,172,182.59/354,626.48
  6. Step 6: Final answer
    x = 267,005.36

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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.