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Finding the Fourth Proportional to 4,770.75, 7,156.49 and 1,692.75

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Solution

The fourth proportional to 4,770.75, 7,156.49 and 1,692.75 is: 2,539.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,770.75 : 7,156.49 = 1,692.75 : x
  2. Step 2: Convert to fraction form
    4,770.75/7,156.49 = 1,692.75/x
  3. Step 3: Cross multiply
    4,770.75x = 7,156.49 × 1,692.75
  4. Step 4: Simplify right side
    4,770.75x = 12,114,139.98
  5. Step 5: Solve for x
    x = 12,114,139.98/4,770.75
  6. Step 6: Final answer
    x = 2,539.25

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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.