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Finding the Fourth Proportional to 173,136.80, 259,705.20 and 84,563.30

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Solution

The fourth proportional to 173,136.80, 259,705.20 and 84,563.30 is: 126,844.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,136.80 : 259,705.20 = 84,563.30 : x
  2. Step 2: Convert to fraction form
    173,136.80/259,705.20 = 84,563.30/x
  3. Step 3: Cross multiply
    173,136.80x = 259,705.20 × 84,563.30
  4. Step 4: Simplify right side
    173,136.80x = 21,961,528,739.16
  5. Step 5: Solve for x
    x = 21,961,528,739.16/173,136.80
  6. Step 6: Final answer
    x = 126,844.95

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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.