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Finding the Fourth Proportional to 139,383.78, 209,083.61 and 39,536.11

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Solution

The fourth proportional to 139,383.78, 209,083.61 and 39,536.11 is: 59,306.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,383.78 : 209,083.61 = 39,536.11 : x
  2. Step 2: Convert to fraction form
    139,383.78/209,083.61 = 39,536.11/x
  3. Step 3: Cross multiply
    139,383.78x = 209,083.61 × 39,536.11
  4. Step 4: Simplify right side
    139,383.78x = 8,266,352,604.16
  5. Step 5: Solve for x
    x = 8,266,352,604.16/139,383.78
  6. Step 6: Final answer
    x = 59,306.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.