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Finding the Fourth Proportional to 123,170.19, 184,745.64 and 75,791.67

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Solution

The fourth proportional to 123,170.19, 184,745.64 and 75,791.67 is: 113,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,170.19 : 184,745.64 = 75,791.67 : x
  2. Step 2: Convert to fraction form
    123,170.19/184,745.64 = 75,791.67/x
  3. Step 3: Cross multiply
    123,170.19x = 184,745.64 × 75,791.67
  4. Step 4: Simplify right side
    123,170.19x = 14,002,180,580.82
  5. Step 5: Solve for x
    x = 14,002,180,580.82/123,170.19
  6. Step 6: Final answer
    x = 113,681.57

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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.