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Finding the Fourth Proportional to 57,619.81, 86,314.42 and 45,793.54

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Solution

The fourth proportional to 57,619.81, 86,314.42 and 45,793.54 is: 68,598.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,619.81 : 86,314.42 = 45,793.54 : x
  2. Step 2: Convert to fraction form
    57,619.81/86,314.42 = 45,793.54/x
  3. Step 3: Cross multiply
    57,619.81x = 86,314.42 × 45,793.54
  4. Step 4: Simplify right side
    57,619.81x = 3,952,642,844.85
  5. Step 5: Solve for x
    x = 3,952,642,844.85/57,619.81
  6. Step 6: Final answer
    x = 68,598.68

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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.