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Finding the Fourth Proportional to 242,640.66, 363,961.01 and 74,161.47

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Solution

The fourth proportional to 242,640.66, 363,961.01 and 74,161.47 is: 111,242.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,640.66 : 363,961.01 = 74,161.47 : x
  2. Step 2: Convert to fraction form
    242,640.66/363,961.01 = 74,161.47/x
  3. Step 3: Cross multiply
    242,640.66x = 363,961.01 × 74,161.47
  4. Step 4: Simplify right side
    242,640.66x = 26,991,885,074.54
  5. Step 5: Solve for x
    x = 26,991,885,074.54/242,640.66
  6. Step 6: Final answer
    x = 111,242.22

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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.