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Finding the Fourth Proportional to 104,048.40, 156,072.60 and 74,523.90

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Solution

The fourth proportional to 104,048.40, 156,072.60 and 74,523.90 is: 111,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,048.40 : 156,072.60 = 74,523.90 : x
  2. Step 2: Convert to fraction form
    104,048.40/156,072.60 = 74,523.90/x
  3. Step 3: Cross multiply
    104,048.40x = 156,072.60 × 74,523.90
  4. Step 4: Simplify right side
    104,048.40x = 11,631,138,835.14
  5. Step 5: Solve for x
    x = 11,631,138,835.14/104,048.40
  6. Step 6: Final answer
    x = 111,785.85

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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.