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Finding the Fourth Proportional to 22,396.70, 33,512.88 and 18,689.78

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Solution

The fourth proportional to 22,396.70, 33,512.88 and 18,689.78 is: 27,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,396.70 : 33,512.88 = 18,689.78 : x
  2. Step 2: Convert to fraction form
    22,396.70/33,512.88 = 18,689.78/x
  3. Step 3: Cross multiply
    22,396.70x = 33,512.88 × 18,689.78
  4. Step 4: Simplify right side
    22,396.70x = 626,348,354.37
  5. Step 5: Solve for x
    x = 626,348,354.37/22,396.70
  6. Step 6: Final answer
    x = 27,966.10

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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.