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Finding the Fourth Proportional to 243,469.55, 365,243.56 and 74,989.82

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Solution

The fourth proportional to 243,469.55, 365,243.56 and 74,989.82 is: 112,496.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,469.55 : 365,243.56 = 74,989.82 : x
  2. Step 2: Convert to fraction form
    243,469.55/365,243.56 = 74,989.82/x
  3. Step 3: Cross multiply
    243,469.55x = 365,243.56 × 74,989.82
  4. Step 4: Simplify right side
    243,469.55x = 27,389,548,820.56
  5. Step 5: Solve for x
    x = 27,389,548,820.56/243,469.55
  6. Step 6: Final answer
    x = 112,496.81

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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.