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Finding the Fourth Proportional to 57,686.70, 79,613.22 and 35,020.44

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Solution

The fourth proportional to 57,686.70, 79,613.22 and 35,020.44 is: 48,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,686.70 : 79,613.22 = 35,020.44 : x
  2. Step 2: Convert to fraction form
    57,686.70/79,613.22 = 35,020.44/x
  3. Step 3: Cross multiply
    57,686.70x = 79,613.22 × 35,020.44
  4. Step 4: Simplify right side
    57,686.70x = 2,788,089,994.22
  5. Step 5: Solve for x
    x = 2,788,089,994.22/57,686.70
  6. Step 6: Final answer
    x = 48,331.59

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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.