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Finding the Fourth Proportional to 60,197.97, 90,297.81 and 28,611.20

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Solution

The fourth proportional to 60,197.97, 90,297.81 and 28,611.20 is: 42,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,197.97 : 90,297.81 = 28,611.20 : x
  2. Step 2: Convert to fraction form
    60,197.97/90,297.81 = 28,611.20/x
  3. Step 3: Cross multiply
    60,197.97x = 90,297.81 × 28,611.20
  4. Step 4: Simplify right side
    60,197.97x = 2,583,528,753.72
  5. Step 5: Solve for x
    x = 2,583,528,753.72/60,197.97
  6. Step 6: Final answer
    x = 42,917.21

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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.