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Finding the Fourth Proportional to 57,760.70, 79,687.40 and 33,878.66

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Solution

The fourth proportional to 57,760.70, 79,687.40 and 33,878.66 is: 46,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,760.70 : 79,687.40 = 33,878.66 : x
  2. Step 2: Convert to fraction form
    57,760.70/79,687.40 = 33,878.66/x
  3. Step 3: Cross multiply
    57,760.70x = 79,687.40 × 33,878.66
  4. Step 4: Simplify right side
    57,760.70x = 2,699,701,763.05
  5. Step 5: Solve for x
    x = 2,699,701,763.05/57,760.70
  6. Step 6: Final answer
    x = 46,739.43

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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.