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Finding the Fourth Proportional to 77,679.20, 116,540.40 and 33,327.20

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Solution

The fourth proportional to 77,679.20, 116,540.40 and 33,327.20 is: 50,000.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,679.20 : 116,540.40 = 33,327.20 : x
  2. Step 2: Convert to fraction form
    77,679.20/116,540.40 = 33,327.20/x
  3. Step 3: Cross multiply
    77,679.20x = 116,540.40 × 33,327.20
  4. Step 4: Simplify right side
    77,679.20x = 3,883,965,218.88
  5. Step 5: Solve for x
    x = 3,883,965,218.88/77,679.20
  6. Step 6: Final answer
    x = 50,000.07

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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.