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Finding the Fourth Proportional to 33,681.69, 46,481.78 and 20,763.81

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Solution

The fourth proportional to 33,681.69, 46,481.78 and 20,763.81 is: 28,654.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,681.69 : 46,481.78 = 20,763.81 : x
  2. Step 2: Convert to fraction form
    33,681.69/46,481.78 = 20,763.81/x
  3. Step 3: Cross multiply
    33,681.69x = 46,481.78 × 20,763.81
  4. Step 4: Simplify right side
    33,681.69x = 965,138,900.29
  5. Step 5: Solve for x
    x = 965,138,900.29/33,681.69
  6. Step 6: Final answer
    x = 28,654.71

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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.