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Finding the Fourth Proportional to 5,692.76, 7,856.24 and 3,174.88

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Solution

The fourth proportional to 5,692.76, 7,856.24 and 3,174.88 is: 4,381.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,692.76 : 7,856.24 = 3,174.88 : x
  2. Step 2: Convert to fraction form
    5,692.76/7,856.24 = 3,174.88/x
  3. Step 3: Cross multiply
    5,692.76x = 7,856.24 × 3,174.88
  4. Step 4: Simplify right side
    5,692.76x = 24,942,619.25
  5. Step 5: Solve for x
    x = 24,942,619.25/5,692.76
  6. Step 6: Final answer
    x = 4,381.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.