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Finding the Fourth Proportional to 9,692.88, 13,375.68 and 5,713.12

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Solution

The fourth proportional to 9,692.88, 13,375.68 and 5,713.12 is: 7,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,692.88 : 13,375.68 = 5,713.12 : x
  2. Step 2: Convert to fraction form
    9,692.88/13,375.68 = 5,713.12/x
  3. Step 3: Cross multiply
    9,692.88x = 13,375.68 × 5,713.12
  4. Step 4: Simplify right side
    9,692.88x = 76,416,864.92
  5. Step 5: Solve for x
    x = 76,416,864.92/9,692.88
  6. Step 6: Final answer
    x = 7,883.81

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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.