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Finding the Fourth Proportional to 79,820.78, 110,147.87 and 45,821.84

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Solution

The fourth proportional to 79,820.78, 110,147.87 and 45,821.84 is: 63,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,820.78 : 110,147.87 = 45,821.84 : x
  2. Step 2: Convert to fraction form
    79,820.78/110,147.87 = 45,821.84/x
  3. Step 3: Cross multiply
    79,820.78x = 110,147.87 × 45,821.84
  4. Step 4: Simplify right side
    79,820.78x = 5,047,177,846.37
  5. Step 5: Solve for x
    x = 5,047,177,846.37/79,820.78
  6. Step 6: Final answer
    x = 63,231.38

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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.