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Finding the Fourth Proportional to 59,979.36, 82,770.30 and 33,120.30

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Solution

The fourth proportional to 59,979.36, 82,770.30 and 33,120.30 is: 45,705.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,979.36 : 82,770.30 = 33,120.30 : x
  2. Step 2: Convert to fraction form
    59,979.36/82,770.30 = 33,120.30/x
  3. Step 3: Cross multiply
    59,979.36x = 82,770.30 × 33,120.30
  4. Step 4: Simplify right side
    59,979.36x = 2,741,377,167.09
  5. Step 5: Solve for x
    x = 2,741,377,167.09/59,979.36
  6. Step 6: Final answer
    x = 45,705.34

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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.