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Finding the Fourth Proportional to 70,613.80, 105,747.90 and 33,634.60

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Solution

The fourth proportional to 70,613.80, 105,747.90 and 33,634.60 is: 50,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,613.80 : 105,747.90 = 33,634.60 : x
  2. Step 2: Convert to fraction form
    70,613.80/105,747.90 = 33,634.60/x
  3. Step 3: Cross multiply
    70,613.80x = 105,747.90 × 33,634.60
  4. Step 4: Simplify right side
    70,613.80x = 3,556,788,317.34
  5. Step 5: Solve for x
    x = 3,556,788,317.34/70,613.80
  6. Step 6: Final answer
    x = 50,369.59

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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.