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Finding the Fourth Proportional to 443,996.94, 612,771.89 and 291,163.71

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Solution

The fourth proportional to 443,996.94, 612,771.89 and 291,163.71 is: 401,842.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,996.94 : 612,771.89 = 291,163.71 : x
  2. Step 2: Convert to fraction form
    443,996.94/612,771.89 = 291,163.71/x
  3. Step 3: Cross multiply
    443,996.94x = 612,771.89 × 291,163.71
  4. Step 4: Simplify right side
    443,996.94x = 178,416,936,876.11
  5. Step 5: Solve for x
    x = 178,416,936,876.11/443,996.94
  6. Step 6: Final answer
    x = 401,842.72

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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.