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Finding the Fourth Proportional to 80,564.40, 120,904.20 and 33,850.80

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Solution

The fourth proportional to 80,564.40, 120,904.20 and 33,850.80 is: 50,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,564.40 : 120,904.20 = 33,850.80 : x
  2. Step 2: Convert to fraction form
    80,564.40/120,904.20 = 33,850.80/x
  3. Step 3: Cross multiply
    80,564.40x = 120,904.20 × 33,850.80
  4. Step 4: Simplify right side
    80,564.40x = 4,092,703,893.36
  5. Step 5: Solve for x
    x = 4,092,703,893.36/80,564.40
  6. Step 6: Final answer
    x = 50,800.40

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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.