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Finding the Fourth Proportional to 619,227.96, 854,171.67 and 389,420.73

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Solution

The fourth proportional to 619,227.96, 854,171.67 and 389,420.73 is: 537,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,227.96 : 854,171.67 = 389,420.73 : x
  2. Step 2: Convert to fraction form
    619,227.96/854,171.67 = 389,420.73/x
  3. Step 3: Cross multiply
    619,227.96x = 854,171.67 × 389,420.73
  4. Step 4: Simplify right side
    619,227.96x = 332,632,155,276.72
  5. Step 5: Solve for x
    x = 332,632,155,276.72/619,227.96
  6. Step 6: Final answer
    x = 537,172.38

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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.