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Finding the Fourth Proportional to 73,911.72, 111,001.20 and 68,283.33

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Solution

The fourth proportional to 73,911.72, 111,001.20 and 68,283.33 is: 102,548.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,911.72 : 111,001.20 = 68,283.33 : x
  2. Step 2: Convert to fraction form
    73,911.72/111,001.20 = 68,283.33/x
  3. Step 3: Cross multiply
    73,911.72x = 111,001.20 × 68,283.33
  4. Step 4: Simplify right side
    73,911.72x = 7,579,531,570.00
  5. Step 5: Solve for x
    x = 7,579,531,570.00/73,911.72
  6. Step 6: Final answer
    x = 102,548.44

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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.