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Finding the Fourth Proportional to 11,291.78, 16,893.92 and 7,576.32

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Solution

The fourth proportional to 11,291.78, 16,893.92 and 7,576.32 is: 11,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.78 : 16,893.92 = 7,576.32 : x
  2. Step 2: Convert to fraction form
    11,291.78/16,893.92 = 7,576.32/x
  3. Step 3: Cross multiply
    11,291.78x = 16,893.92 × 7,576.32
  4. Step 4: Simplify right side
    11,291.78x = 127,993,743.97
  5. Step 5: Solve for x
    x = 127,993,743.97/11,291.78
  6. Step 6: Final answer
    x = 11,335.13

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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.