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Finding the Fourth Proportional to 75,099.22, 103,662.80 and 43,280.80

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Solution

The fourth proportional to 75,099.22, 103,662.80 and 43,280.80 is: 59,742.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,099.22 : 103,662.80 = 43,280.80 : x
  2. Step 2: Convert to fraction form
    75,099.22/103,662.80 = 43,280.80/x
  3. Step 3: Cross multiply
    75,099.22x = 103,662.80 × 43,280.80
  4. Step 4: Simplify right side
    75,099.22x = 4,486,608,914.24
  5. Step 5: Solve for x
    x = 4,486,608,914.24/75,099.22
  6. Step 6: Final answer
    x = 59,742.42

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1.5x scale

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.