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Finding the Fourth Proportional to 7,709.88, 11,559.06 and 3,604.92

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Solution

The fourth proportional to 7,709.88, 11,559.06 and 3,604.92 is: 5,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.88 : 11,559.06 = 3,604.92 : x
  2. Step 2: Convert to fraction form
    7,709.88/11,559.06 = 3,604.92/x
  3. Step 3: Cross multiply
    7,709.88x = 11,559.06 × 3,604.92
  4. Step 4: Simplify right side
    7,709.88x = 41,669,486.58
  5. Step 5: Solve for x
    x = 41,669,486.58/7,709.88
  6. Step 6: Final answer
    x = 5,404.69

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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.