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Finding the Fourth Proportional to 18,963.56, 28,445.31 and 17,794.88

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Solution

The fourth proportional to 18,963.56, 28,445.31 and 17,794.88 is: 26,692.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.56 : 28,445.31 = 17,794.88 : x
  2. Step 2: Convert to fraction form
    18,963.56/28,445.31 = 17,794.88/x
  3. Step 3: Cross multiply
    18,963.56x = 28,445.31 × 17,794.88
  4. Step 4: Simplify right side
    18,963.56x = 506,180,878.01
  5. Step 5: Solve for x
    x = 506,180,878.01/18,963.56
  6. Step 6: Final answer
    x = 26,692.29

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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.