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Finding the Fourth Proportional to 66,169.91, 99,199.05 and 28,701.78

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Solution

The fourth proportional to 66,169.91, 99,199.05 and 28,701.78 is: 43,028.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,169.91 : 99,199.05 = 28,701.78 : x
  2. Step 2: Convert to fraction form
    66,169.91/99,199.05 = 28,701.78/x
  3. Step 3: Cross multiply
    66,169.91x = 99,199.05 × 28,701.78
  4. Step 4: Simplify right side
    66,169.91x = 2,847,188,829.68
  5. Step 5: Solve for x
    x = 2,847,188,829.68/66,169.91
  6. Step 6: Final answer
    x = 43,028.45

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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.