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Finding the Fourth Proportional to 108,640.90, 149,923.94 and 60,894.24

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Solution

The fourth proportional to 108,640.90, 149,923.94 and 60,894.24 is: 84,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,640.90 : 149,923.94 = 60,894.24 : x
  2. Step 2: Convert to fraction form
    108,640.90/149,923.94 = 60,894.24/x
  3. Step 3: Cross multiply
    108,640.90x = 149,923.94 × 60,894.24
  4. Step 4: Simplify right side
    108,640.90x = 9,129,504,384.11
  5. Step 5: Solve for x
    x = 9,129,504,384.11/108,640.90
  6. Step 6: Final answer
    x = 84,033.77

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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.