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Finding the Fourth Proportional to 56,936.35, 85,369.48 and 39,188.54

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Solution

The fourth proportional to 56,936.35, 85,369.48 and 39,188.54 is: 58,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,936.35 : 85,369.48 = 39,188.54 : x
  2. Step 2: Convert to fraction form
    56,936.35/85,369.48 = 39,188.54/x
  3. Step 3: Cross multiply
    56,936.35x = 85,369.48 × 39,188.54
  4. Step 4: Simplify right side
    56,936.35x = 3,345,505,397.21
  5. Step 5: Solve for x
    x = 3,345,505,397.21/56,936.35
  6. Step 6: Final answer
    x = 58,758.69

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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.