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Finding the Fourth Proportional to 321,661.09, 443,883.74 and 185,690.44

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Solution

The fourth proportional to 321,661.09, 443,883.74 and 185,690.44 is: 256,247.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,661.09 : 443,883.74 = 185,690.44 : x
  2. Step 2: Convert to fraction form
    321,661.09/443,883.74 = 185,690.44/x
  3. Step 3: Cross multiply
    321,661.09x = 443,883.74 × 185,690.44
  4. Step 4: Simplify right side
    321,661.09x = 82,424,964,951.28
  5. Step 5: Solve for x
    x = 82,424,964,951.28/321,661.09
  6. Step 6: Final answer
    x = 256,247.86

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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.