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Finding the Fourth Proportional to 111,255.72, 166,920.84 and 36,379.32

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Solution

The fourth proportional to 111,255.72, 166,920.84 and 36,379.32 is: 54,581.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,255.72 : 166,920.84 = 36,379.32 : x
  2. Step 2: Convert to fraction form
    111,255.72/166,920.84 = 36,379.32/x
  3. Step 3: Cross multiply
    111,255.72x = 166,920.84 × 36,379.32
  4. Step 4: Simplify right side
    111,255.72x = 6,072,466,653.03
  5. Step 5: Solve for x
    x = 6,072,466,653.03/111,255.72
  6. Step 6: Final answer
    x = 54,581.16

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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.