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Finding the Fourth Proportional to 321,910.48, 444,258.84 and 185,990.32

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Solution

The fourth proportional to 321,910.48, 444,258.84 and 185,990.32 is: 256,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,910.48 : 444,258.84 = 185,990.32 : x
  2. Step 2: Convert to fraction form
    321,910.48/444,258.84 = 185,990.32/x
  3. Step 3: Cross multiply
    321,910.48x = 444,258.84 × 185,990.32
  4. Step 4: Simplify right side
    321,910.48x = 82,627,843,814.43
  5. Step 5: Solve for x
    x = 82,627,843,814.43/321,910.48
  6. Step 6: Final answer
    x = 256,679.57

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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.