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Finding the Fourth Proportional to 172,326.60, 258,684.30 and 133,057.80

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Solution

The fourth proportional to 172,326.60, 258,684.30 and 133,057.80 is: 199,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,326.60 : 258,684.30 = 133,057.80 : x
  2. Step 2: Convert to fraction form
    172,326.60/258,684.30 = 133,057.80/x
  3. Step 3: Cross multiply
    172,326.60x = 258,684.30 × 133,057.80
  4. Step 4: Simplify right side
    172,326.60x = 34,419,963,852.54
  5. Step 5: Solve for x
    x = 34,419,963,852.54/172,326.60
  6. Step 6: Final answer
    x = 199,736.80

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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.