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Finding the Fourth Proportional to 354,323.09, 488,961.16 and 193,177.85

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Solution

The fourth proportional to 354,323.09, 488,961.16 and 193,177.85 is: 266,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,323.09 : 488,961.16 = 193,177.85 : x
  2. Step 2: Convert to fraction form
    354,323.09/488,961.16 = 193,177.85/x
  3. Step 3: Cross multiply
    354,323.09x = 488,961.16 × 193,177.85
  4. Step 4: Simplify right side
    354,323.09x = 94,456,462,694.56
  5. Step 5: Solve for x
    x = 94,456,462,694.56/354,323.09
  6. Step 6: Final answer
    x = 266,582.86

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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.