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Finding the Fourth Proportional to 619,083.33, 853,973.04 and 389,276.78

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Solution

The fourth proportional to 619,083.33, 853,973.04 and 389,276.78 is: 536,974.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,083.33 : 853,973.04 = 389,276.78 : x
  2. Step 2: Convert to fraction form
    619,083.33/853,973.04 = 389,276.78/x
  3. Step 3: Cross multiply
    619,083.33x = 853,973.04 × 389,276.78
  4. Step 4: Simplify right side
    619,083.33x = 332,431,872,407.93
  5. Step 5: Solve for x
    x = 332,431,872,407.93/619,083.33
  6. Step 6: Final answer
    x = 536,974.36

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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.