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Finding the Fourth Proportional to 21,996.20, 32,994.30 and 21,348.20

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Solution

The fourth proportional to 21,996.20, 32,994.30 and 21,348.20 is: 32,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.20 : 32,994.30 = 21,348.20 : x
  2. Step 2: Convert to fraction form
    21,996.20/32,994.30 = 21,348.20/x
  3. Step 3: Cross multiply
    21,996.20x = 32,994.30 × 21,348.20
  4. Step 4: Simplify right side
    21,996.20x = 704,368,915.26
  5. Step 5: Solve for x
    x = 704,368,915.26/21,996.20
  6. Step 6: Final answer
    x = 32,022.30

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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.