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Finding the Fourth Proportional to 21,995.84, 32,984.49 and 7,196.60

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Solution

The fourth proportional to 21,995.84, 32,984.49 and 7,196.60 is: 10,791.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.84 : 32,984.49 = 7,196.60 : x
  2. Step 2: Convert to fraction form
    21,995.84/32,984.49 = 7,196.60/x
  3. Step 3: Cross multiply
    21,995.84x = 32,984.49 × 7,196.60
  4. Step 4: Simplify right side
    21,995.84x = 237,376,180.73
  5. Step 5: Solve for x
    x = 237,376,180.73/21,995.84
  6. Step 6: Final answer
    x = 10,791.87

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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.