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Finding the Fourth Proportional to 111,605.81, 167,408.70 and 49,263.89

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Solution

The fourth proportional to 111,605.81, 167,408.70 and 49,263.89 is: 73,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,605.81 : 167,408.70 = 49,263.89 : x
  2. Step 2: Convert to fraction form
    111,605.81/167,408.70 = 49,263.89/x
  3. Step 3: Cross multiply
    111,605.81x = 167,408.70 × 49,263.89
  4. Step 4: Simplify right side
    111,605.81x = 8,247,203,781.84
  5. Step 5: Solve for x
    x = 8,247,203,781.84/111,605.81
  6. Step 6: Final answer
    x = 73,895.83

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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.