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Finding the Fourth Proportional to 111,773.84, 167,671.70 and 40,715.78

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Solution

The fourth proportional to 111,773.84, 167,671.70 and 40,715.78 is: 61,077.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,773.84 : 167,671.70 = 40,715.78 : x
  2. Step 2: Convert to fraction form
    111,773.84/167,671.70 = 40,715.78/x
  3. Step 3: Cross multiply
    111,773.84x = 167,671.70 × 40,715.78
  4. Step 4: Simplify right side
    111,773.84x = 6,826,883,845.85
  5. Step 5: Solve for x
    x = 6,826,883,845.85/111,773.84
  6. Step 6: Final answer
    x = 61,077.65

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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.