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Finding the Fourth Proportional to 321,520.05, 443,696.94 and 178,276.41

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Solution

The fourth proportional to 321,520.05, 443,696.94 and 178,276.41 is: 246,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,520.05 : 443,696.94 = 178,276.41 : x
  2. Step 2: Convert to fraction form
    321,520.05/443,696.94 = 178,276.41/x
  3. Step 3: Cross multiply
    321,520.05x = 443,696.94 × 178,276.41
  4. Step 4: Simplify right side
    321,520.05x = 79,100,697,591.19
  5. Step 5: Solve for x
    x = 79,100,697,591.19/321,520.05
  6. Step 6: Final answer
    x = 246,021.04

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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.