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Finding the Fourth Proportional to 57,608.70, 86,207.74 and 39,842.96

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Solution

The fourth proportional to 57,608.70, 86,207.74 and 39,842.96 is: 59,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,608.70 : 86,207.74 = 39,842.96 : x
  2. Step 2: Convert to fraction form
    57,608.70/86,207.74 = 39,842.96/x
  3. Step 3: Cross multiply
    57,608.70x = 86,207.74 × 39,842.96
  4. Step 4: Simplify right side
    57,608.70x = 3,434,771,536.51
  5. Step 5: Solve for x
    x = 3,434,771,536.51/57,608.70
  6. Step 6: Final answer
    x = 59,622.44

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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.