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Finding the Fourth Proportional to 76,079.74, 104,687.35 and 73,768.51

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Solution

The fourth proportional to 76,079.74, 104,687.35 and 73,768.51 is: 101,507.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,079.74 : 104,687.35 = 73,768.51 : x
  2. Step 2: Convert to fraction form
    76,079.74/104,687.35 = 73,768.51/x
  3. Step 3: Cross multiply
    76,079.74x = 104,687.35 × 73,768.51
  4. Step 4: Simplify right side
    76,079.74x = 7,722,629,825.35
  5. Step 5: Solve for x
    x = 7,722,629,825.35/76,079.74
  6. Step 6: Final answer
    x = 101,507.05

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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.