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Finding the Fourth Proportional to 7,335.78, 11,006.91 and 2,961.78

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Solution

The fourth proportional to 7,335.78, 11,006.91 and 2,961.78 is: 4,443.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.78 : 11,006.91 = 2,961.78 : x
  2. Step 2: Convert to fraction form
    7,335.78/11,006.91 = 2,961.78/x
  3. Step 3: Cross multiply
    7,335.78x = 11,006.91 × 2,961.78
  4. Step 4: Simplify right side
    7,335.78x = 32,599,976.06
  5. Step 5: Solve for x
    x = 32,599,976.06/7,335.78
  6. Step 6: Final answer
    x = 4,443.97

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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.