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Finding the Fourth Proportional to 80,893.49, 111,629.04 and 45,076.80

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Solution

The fourth proportional to 80,893.49, 111,629.04 and 45,076.80 is: 62,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,893.49 : 111,629.04 = 45,076.80 : x
  2. Step 2: Convert to fraction form
    80,893.49/111,629.04 = 45,076.80/x
  3. Step 3: Cross multiply
    80,893.49x = 111,629.04 × 45,076.80
  4. Step 4: Simplify right side
    80,893.49x = 5,031,880,159.84
  5. Step 5: Solve for x
    x = 5,031,880,159.84/80,893.49
  6. Step 6: Final answer
    x = 62,203.78

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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.