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Finding the Fourth Proportional to 321,414.01, 443,521.50 and 178,161.86

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Solution

The fourth proportional to 321,414.01, 443,521.50 and 178,161.86 is: 245,846.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,414.01 : 443,521.50 = 178,161.86 : x
  2. Step 2: Convert to fraction form
    321,414.01/443,521.50 = 178,161.86/x
  3. Step 3: Cross multiply
    321,414.01x = 443,521.50 × 178,161.86
  4. Step 4: Simplify right side
    321,414.01x = 79,018,615,389.99
  5. Step 5: Solve for x
    x = 79,018,615,389.99/321,414.01
  6. Step 6: Final answer
    x = 245,846.83

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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.