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Finding the Fourth Proportional to 75,928.80, 113,893.20 and 33,808.80

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Solution

The fourth proportional to 75,928.80, 113,893.20 and 33,808.80 is: 50,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,928.80 : 113,893.20 = 33,808.80 : x
  2. Step 2: Convert to fraction form
    75,928.80/113,893.20 = 33,808.80/x
  3. Step 3: Cross multiply
    75,928.80x = 113,893.20 × 33,808.80
  4. Step 4: Simplify right side
    75,928.80x = 3,850,592,420.16
  5. Step 5: Solve for x
    x = 3,850,592,420.16/75,928.80
  6. Step 6: Final answer
    x = 50,713.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.