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Finding the Fourth Proportional to 66,105.29, 99,059.46 and 36,531.57

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Solution

The fourth proportional to 66,105.29, 99,059.46 and 36,531.57 is: 54,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.29 : 99,059.46 = 36,531.57 : x
  2. Step 2: Convert to fraction form
    66,105.29/99,059.46 = 36,531.57/x
  3. Step 3: Cross multiply
    66,105.29x = 99,059.46 × 36,531.57
  4. Step 4: Simplify right side
    66,105.29x = 3,618,797,597.15
  5. Step 5: Solve for x
    x = 3,618,797,597.15/66,105.29
  6. Step 6: Final answer
    x = 54,742.94

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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.