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Finding the Fourth Proportional to 74,490.90, 111,736.35 and 44,553.30

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Solution

The fourth proportional to 74,490.90, 111,736.35 and 44,553.30 is: 66,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,490.90 : 111,736.35 = 44,553.30 : x
  2. Step 2: Convert to fraction form
    74,490.90/111,736.35 = 44,553.30/x
  3. Step 3: Cross multiply
    74,490.90x = 111,736.35 × 44,553.30
  4. Step 4: Simplify right side
    74,490.90x = 4,978,223,122.46
  5. Step 5: Solve for x
    x = 4,978,223,122.46/74,490.90
  6. Step 6: Final answer
    x = 66,829.95

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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.