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Finding the Fourth Proportional to 73,090.98, 100,865.56 and 39,556.98

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Solution

The fourth proportional to 73,090.98, 100,865.56 and 39,556.98 is: 54,588.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,090.98 : 100,865.56 = 39,556.98 : x
  2. Step 2: Convert to fraction form
    73,090.98/100,865.56 = 39,556.98/x
  3. Step 3: Cross multiply
    73,090.98x = 100,865.56 × 39,556.98
  4. Step 4: Simplify right side
    73,090.98x = 3,989,936,536.64
  5. Step 5: Solve for x
    x = 3,989,936,536.64/73,090.98
  6. Step 6: Final answer
    x = 54,588.63

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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.