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Finding the Fourth Proportional to 57,090.82, 78,860.63 and 43,825.99

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Solution

The fourth proportional to 57,090.82, 78,860.63 and 43,825.99 is: 60,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.82 : 78,860.63 = 43,825.99 : x
  2. Step 2: Convert to fraction form
    57,090.82/78,860.63 = 43,825.99/x
  3. Step 3: Cross multiply
    57,090.82x = 78,860.63 × 43,825.99
  4. Step 4: Simplify right side
    57,090.82x = 3,456,145,181.77
  5. Step 5: Solve for x
    x = 3,456,145,181.77/57,090.82
  6. Step 6: Final answer
    x = 60,537.67

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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.