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Finding the Fourth Proportional to 57,982.80, 86,971.34 and 33,980.48

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Solution

The fourth proportional to 57,982.80, 86,971.34 and 33,980.48 is: 50,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,982.80 : 86,971.34 = 33,980.48 : x
  2. Step 2: Convert to fraction form
    57,982.80/86,971.34 = 33,980.48/x
  3. Step 3: Cross multiply
    57,982.80x = 86,971.34 × 33,980.48
  4. Step 4: Simplify right side
    57,982.80x = 2,955,327,879.44
  5. Step 5: Solve for x
    x = 2,955,327,879.44/57,982.80
  6. Step 6: Final answer
    x = 50,969.04

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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.