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Finding the Fourth Proportional to 172,841.68, 238,517.12 and 100,257.36

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Solution

The fourth proportional to 172,841.68, 238,517.12 and 100,257.36 is: 138,352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,841.68 : 238,517.12 = 100,257.36 : x
  2. Step 2: Convert to fraction form
    172,841.68/238,517.12 = 100,257.36/x
  3. Step 3: Cross multiply
    172,841.68x = 238,517.12 × 100,257.36
  4. Step 4: Simplify right side
    172,841.68x = 23,913,096,766.00
  5. Step 5: Solve for x
    x = 23,913,096,766.00/172,841.68
  6. Step 6: Final answer
    x = 138,352.61

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1.5x scale

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.