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Finding the Fourth Proportional to 118,911.44, 178,385.54 and 40,019.48

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Solution

The fourth proportional to 118,911.44, 178,385.54 and 40,019.48 is: 60,035.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,911.44 : 178,385.54 = 40,019.48 : x
  2. Step 2: Convert to fraction form
    118,911.44/178,385.54 = 40,019.48/x
  3. Step 3: Cross multiply
    118,911.44x = 178,385.54 × 40,019.48
  4. Step 4: Simplify right side
    118,911.44x = 7,138,896,550.32
  5. Step 5: Solve for x
    x = 7,138,896,550.32/118,911.44
  6. Step 6: Final answer
    x = 60,035.41

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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.