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Finding the Fourth Proportional to 321,693.23, 443,989.88 and 178,499.41

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Solution

The fourth proportional to 321,693.23, 443,989.88 and 178,499.41 is: 246,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,693.23 : 443,989.88 = 178,499.41 : x
  2. Step 2: Convert to fraction form
    321,693.23/443,989.88 = 178,499.41/x
  3. Step 3: Cross multiply
    321,693.23x = 443,989.88 × 178,499.41
  4. Step 4: Simplify right side
    321,693.23x = 79,251,930,962.24
  5. Step 5: Solve for x
    x = 79,251,930,962.24/321,693.23
  6. Step 6: Final answer
    x = 246,358.71

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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.