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Finding the Fourth Proportional to 111,617.10, 167,381.10 and 36,716.40

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Solution

The fourth proportional to 111,617.10, 167,381.10 and 36,716.40 is: 55,059.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,617.10 : 167,381.10 = 36,716.40 : x
  2. Step 2: Convert to fraction form
    111,617.10/167,381.10 = 36,716.40/x
  3. Step 3: Cross multiply
    111,617.10x = 167,381.10 × 36,716.40
  4. Step 4: Simplify right side
    111,617.10x = 6,145,631,420.04
  5. Step 5: Solve for x
    x = 6,145,631,420.04/111,617.10
  6. Step 6: Final answer
    x = 55,059.95

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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.