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Finding the Fourth Proportional to 61,399.39, 84,736.07 and 34,540.30

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Solution

The fourth proportional to 61,399.39, 84,736.07 and 34,540.30 is: 47,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,399.39 : 84,736.07 = 34,540.30 : x
  2. Step 2: Convert to fraction form
    61,399.39/84,736.07 = 34,540.30/x
  3. Step 3: Cross multiply
    61,399.39x = 84,736.07 × 34,540.30
  4. Step 4: Simplify right side
    61,399.39x = 2,926,809,278.62
  5. Step 5: Solve for x
    x = 2,926,809,278.62/61,399.39
  6. Step 6: Final answer
    x = 47,668.38

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1.5x scale

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.