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Finding the Fourth Proportional to 93,720.78, 140,639.49 and 41,174.46

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Solution

The fourth proportional to 93,720.78, 140,639.49 and 41,174.46 is: 61,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,720.78 : 140,639.49 = 41,174.46 : x
  2. Step 2: Convert to fraction form
    93,720.78/140,639.49 = 41,174.46/x
  3. Step 3: Cross multiply
    93,720.78x = 140,639.49 × 41,174.46
  4. Step 4: Simplify right side
    93,720.78x = 5,790,755,055.43
  5. Step 5: Solve for x
    x = 5,790,755,055.43/93,720.78
  6. Step 6: Final answer
    x = 61,787.31

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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.