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Finding the Fourth Proportional to 62,605, 86,394.90 and 36,109

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Solution

The fourth proportional to 62,605, 86,394.90 and 36,109 is: 49,830.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,605 : 86,394.90 = 36,109 : x
  2. Step 2: Convert to fraction form
    62,605/86,394.90 = 36,109/x
  3. Step 3: Cross multiply
    62,605x = 86,394.90 × 36,109
  4. Step 4: Simplify right side
    62,605x = 3,119,633,444.10
  5. Step 5: Solve for x
    x = 3,119,633,444.10/62,605
  6. Step 6: Final answer
    x = 49,830.42

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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.