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Finding the Fourth Proportional to 66,586.50, 91,889.37 and 36,780.42

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Solution

The fourth proportional to 66,586.50, 91,889.37 and 36,780.42 is: 50,756.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,586.50 : 91,889.37 = 36,780.42 : x
  2. Step 2: Convert to fraction form
    66,586.50/91,889.37 = 36,780.42/x
  3. Step 3: Cross multiply
    66,586.50x = 91,889.37 × 36,780.42
  4. Step 4: Simplify right side
    66,586.50x = 3,379,729,622.14
  5. Step 5: Solve for x
    x = 3,379,729,622.14/66,586.50
  6. Step 6: Final answer
    x = 50,756.98

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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.