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Finding the Fourth Proportional to 111,911.67, 154,440.08 and 60,925.86

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Solution

The fourth proportional to 111,911.67, 154,440.08 and 60,925.86 is: 84,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,911.67 : 154,440.08 = 60,925.86 : x
  2. Step 2: Convert to fraction form
    111,911.67/154,440.08 = 60,925.86/x
  3. Step 3: Cross multiply
    111,911.67x = 154,440.08 × 60,925.86
  4. Step 4: Simplify right side
    111,911.67x = 9,409,394,692.47
  5. Step 5: Solve for x
    x = 9,409,394,692.47/111,911.67
  6. Step 6: Final answer
    x = 84,078.76

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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.