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Finding the Fourth Proportional to 396,172.28, 546,685.26 and 217,324.28

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Solution

The fourth proportional to 396,172.28, 546,685.26 and 217,324.28 is: 299,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,172.28 : 546,685.26 = 217,324.28 : x
  2. Step 2: Convert to fraction form
    396,172.28/546,685.26 = 217,324.28/x
  3. Step 3: Cross multiply
    396,172.28x = 546,685.26 × 217,324.28
  4. Step 4: Simplify right side
    396,172.28x = 118,807,980,516.11
  5. Step 5: Solve for x
    x = 118,807,980,516.11/396,172.28
  6. Step 6: Final answer
    x = 299,889.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.