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Finding the Fourth Proportional to 36,855.50, 55,283.25 and 12,231.50

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Solution

The fourth proportional to 36,855.50, 55,283.25 and 12,231.50 is: 18,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,855.50 : 55,283.25 = 12,231.50 : x
  2. Step 2: Convert to fraction form
    36,855.50/55,283.25 = 12,231.50/x
  3. Step 3: Cross multiply
    36,855.50x = 55,283.25 × 12,231.50
  4. Step 4: Simplify right side
    36,855.50x = 676,197,072.38
  5. Step 5: Solve for x
    x = 676,197,072.38/36,855.50
  6. Step 6: Final answer
    x = 18,347.25

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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.