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Finding the Fourth Proportional to 124,662.43, 172,046.60 and 74,361.43

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Solution

The fourth proportional to 124,662.43, 172,046.60 and 74,361.43 is: 102,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,662.43 : 172,046.60 = 74,361.43 : x
  2. Step 2: Convert to fraction form
    124,662.43/172,046.60 = 74,361.43/x
  3. Step 3: Cross multiply
    124,662.43x = 172,046.60 × 74,361.43
  4. Step 4: Simplify right side
    124,662.43x = 12,793,631,202.64
  5. Step 5: Solve for x
    x = 12,793,631,202.64/124,662.43
  6. Step 6: Final answer
    x = 102,626.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.