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Finding the Fourth Proportional to 396,675.90, 546,499.20 and 274,050.81

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Solution

The fourth proportional to 396,675.90, 546,499.20 and 274,050.81 is: 377,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,675.90 : 546,499.20 = 274,050.81 : x
  2. Step 2: Convert to fraction form
    396,675.90/546,499.20 = 274,050.81/x
  3. Step 3: Cross multiply
    396,675.90x = 546,499.20 × 274,050.81
  4. Step 4: Simplify right side
    396,675.90x = 149,768,544,321.60
  5. Step 5: Solve for x
    x = 149,768,544,321.60/396,675.90
  6. Step 6: Final answer
    x = 377,558.97

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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.