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Finding the Fourth Proportional to 66,515.80, 91,793.94 and 37,834.72

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Solution

The fourth proportional to 66,515.80, 91,793.94 and 37,834.72 is: 52,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.80 : 91,793.94 = 37,834.72 : x
  2. Step 2: Convert to fraction form
    66,515.80/91,793.94 = 37,834.72/x
  3. Step 3: Cross multiply
    66,515.80x = 91,793.94 × 37,834.72
  4. Step 4: Simplify right side
    66,515.80x = 3,472,998,017.60
  5. Step 5: Solve for x
    x = 3,472,998,017.60/66,515.80
  6. Step 6: Final answer
    x = 52,213.13

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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.