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Finding the Fourth Proportional to 79,924.88, 110,206.89 and 65,343.60

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Solution

The fourth proportional to 79,924.88, 110,206.89 and 65,343.60 is: 90,101.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,924.88 : 110,206.89 = 65,343.60 : x
  2. Step 2: Convert to fraction form
    79,924.88/110,206.89 = 65,343.60/x
  3. Step 3: Cross multiply
    79,924.88x = 110,206.89 × 65,343.60
  4. Step 4: Simplify right side
    79,924.88x = 7,201,315,016.27
  5. Step 5: Solve for x
    x = 7,201,315,016.27/79,924.88
  6. Step 6: Final answer
    x = 90,101.04

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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.