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Finding the Fourth Proportional to 321,141.36, 443,175.08 and 177,910.68

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Solution

The fourth proportional to 321,141.36, 443,175.08 and 177,910.68 is: 245,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,141.36 : 443,175.08 = 177,910.68 : x
  2. Step 2: Convert to fraction form
    321,141.36/443,175.08 = 177,910.68/x
  3. Step 3: Cross multiply
    321,141.36x = 443,175.08 × 177,910.68
  4. Step 4: Simplify right side
    321,141.36x = 78,845,578,733.92
  5. Step 5: Solve for x
    x = 78,845,578,733.92/321,141.36
  6. Step 6: Final answer
    x = 245,516.74

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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.