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Finding the Fourth Proportional to 75,858.79, 113,211.37 and 67,451.44

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Solution

The fourth proportional to 75,858.79, 113,211.37 and 67,451.44 is: 100,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,858.79 : 113,211.37 = 67,451.44 : x
  2. Step 2: Convert to fraction form
    75,858.79/113,211.37 = 67,451.44/x
  3. Step 3: Cross multiply
    75,858.79x = 113,211.37 × 67,451.44
  4. Step 4: Simplify right side
    75,858.79x = 7,636,269,930.87
  5. Step 5: Solve for x
    x = 7,636,269,930.87/75,858.79
  6. Step 6: Final answer
    x = 100,664.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.