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Finding the Fourth Proportional to 11,375.40, 17,033.94 and 7,915.08

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Solution

The fourth proportional to 11,375.40, 17,033.94 and 7,915.08 is: 11,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.40 : 17,033.94 = 7,915.08 : x
  2. Step 2: Convert to fraction form
    11,375.40/17,033.94 = 7,915.08/x
  3. Step 3: Cross multiply
    11,375.40x = 17,033.94 × 7,915.08
  4. Step 4: Simplify right side
    11,375.40x = 134,824,997.82
  5. Step 5: Solve for x
    x = 134,824,997.82/11,375.40
  6. Step 6: Final answer
    x = 11,852.33

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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.