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Finding the Fourth Proportional to 619,114.65, 854,016.23 and 389,308.23

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Solution

The fourth proportional to 619,114.65, 854,016.23 and 389,308.23 is: 537,017.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,114.65 : 854,016.23 = 389,308.23 : x
  2. Step 2: Convert to fraction form
    619,114.65/854,016.23 = 389,308.23/x
  3. Step 3: Cross multiply
    619,114.65x = 854,016.23 × 389,308.23
  4. Step 4: Simplify right side
    619,114.65x = 332,475,542,622.49
  5. Step 5: Solve for x
    x = 332,475,542,622.49/619,114.65
  6. Step 6: Final answer
    x = 537,017.73

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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.