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Finding the Fourth Proportional to 111,969.20, 167,905.20 and 37,060.40

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Solution

The fourth proportional to 111,969.20, 167,905.20 and 37,060.40 is: 55,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,969.20 : 167,905.20 = 37,060.40 : x
  2. Step 2: Convert to fraction form
    111,969.20/167,905.20 = 37,060.40/x
  3. Step 3: Cross multiply
    111,969.20x = 167,905.20 × 37,060.40
  4. Step 4: Simplify right side
    111,969.20x = 6,222,633,874.08
  5. Step 5: Solve for x
    x = 6,222,633,874.08/111,969.20
  6. Step 6: Final answer
    x = 55,574.51

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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.