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Finding the Fourth Proportional to 2,667.97, 4,001.96 and 936.60

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Solution

The fourth proportional to 2,667.97, 4,001.96 and 936.60 is: 1,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.97 : 4,001.96 = 936.60 : x
  2. Step 2: Convert to fraction form
    2,667.97/4,001.96 = 936.60/x
  3. Step 3: Cross multiply
    2,667.97x = 4,001.96 × 936.60
  4. Step 4: Simplify right side
    2,667.97x = 3,748,221.05
  5. Step 5: Solve for x
    x = 3,748,221.05/2,667.97
  6. Step 6: Final answer
    x = 1,404.89

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1.5x scale

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.