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Finding the Fourth Proportional to 136,762.97, 205,505.27 and 73,629.77

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Solution

The fourth proportional to 136,762.97, 205,505.27 and 73,629.77 is: 110,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,762.97 : 205,505.27 = 73,629.77 : x
  2. Step 2: Convert to fraction form
    136,762.97/205,505.27 = 73,629.77/x
  3. Step 3: Cross multiply
    136,762.97x = 205,505.27 × 73,629.77
  4. Step 4: Simplify right side
    136,762.97x = 15,131,305,395.74
  5. Step 5: Solve for x
    x = 15,131,305,395.74/136,762.97
  6. Step 6: Final answer
    x = 110,638.91

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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.