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Finding the Fourth Proportional to 66,169.78, 99,198.85 and 28,701.65

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Solution

The fourth proportional to 66,169.78, 99,198.85 and 28,701.65 is: 43,028.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,169.78 : 99,198.85 = 28,701.65 : x
  2. Step 2: Convert to fraction form
    66,169.78/99,198.85 = 28,701.65/x
  3. Step 3: Cross multiply
    66,169.78x = 99,198.85 × 28,701.65
  4. Step 4: Simplify right side
    66,169.78x = 2,847,170,673.10
  5. Step 5: Solve for x
    x = 2,847,170,673.10/66,169.78
  6. Step 6: Final answer
    x = 43,028.26

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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.