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Finding the Fourth Proportional to 619,188.37, 854,133.96 and 389,659.98

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Solution

The fourth proportional to 619,188.37, 854,133.96 and 389,659.98 is: 537,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,188.37 : 854,133.96 = 389,659.98 : x
  2. Step 2: Convert to fraction form
    619,188.37/854,133.96 = 389,659.98/x
  3. Step 3: Cross multiply
    619,188.37x = 854,133.96 × 389,659.98
  4. Step 4: Simplify right side
    619,188.37x = 332,821,826,435.15
  5. Step 5: Solve for x
    x = 332,821,826,435.15/619,188.37
  6. Step 6: Final answer
    x = 537,513.05

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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.