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Finding the Fourth Proportional to 6,991.77, 9,651.15 and 4,634.67

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Solution

The fourth proportional to 6,991.77, 9,651.15 and 4,634.67 is: 6,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.77 : 9,651.15 = 4,634.67 : x
  2. Step 2: Convert to fraction form
    6,991.77/9,651.15 = 4,634.67/x
  3. Step 3: Cross multiply
    6,991.77x = 9,651.15 × 4,634.67
  4. Step 4: Simplify right side
    6,991.77x = 44,729,895.37
  5. Step 5: Solve for x
    x = 44,729,895.37/6,991.77
  6. Step 6: Final answer
    x = 6,397.51

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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.