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Finding the Fourth Proportional to 18,312.75, 27,469.26 and 4,461.75

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Solution

The fourth proportional to 18,312.75, 27,469.26 and 4,461.75 is: 6,692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.75 : 27,469.26 = 4,461.75 : x
  2. Step 2: Convert to fraction form
    18,312.75/27,469.26 = 4,461.75/x
  3. Step 3: Cross multiply
    18,312.75x = 27,469.26 × 4,461.75
  4. Step 4: Simplify right side
    18,312.75x = 122,560,970.81
  5. Step 5: Solve for x
    x = 122,560,970.81/18,312.75
  6. Step 6: Final answer
    x = 6,692.66

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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.