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Finding the Fourth Proportional to 118,408.78, 177,683.22 and 43,581.48

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Solution

The fourth proportional to 118,408.78, 177,683.22 and 43,581.48 is: 65,398.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,408.78 : 177,683.22 = 43,581.48 : x
  2. Step 2: Convert to fraction form
    118,408.78/177,683.22 = 43,581.48/x
  3. Step 3: Cross multiply
    118,408.78x = 177,683.22 × 43,581.48
  4. Step 4: Simplify right side
    118,408.78x = 7,743,697,698.77
  5. Step 5: Solve for x
    x = 7,743,697,698.77/118,408.78
  6. Step 6: Final answer
    x = 65,398.00

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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.