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Finding the Fourth Proportional to 12,609.84, 18,923.22 and 4,401.84

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Solution

The fourth proportional to 12,609.84, 18,923.22 and 4,401.84 is: 6,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.84 : 18,923.22 = 4,401.84 : x
  2. Step 2: Convert to fraction form
    12,609.84/18,923.22 = 4,401.84/x
  3. Step 3: Cross multiply
    12,609.84x = 18,923.22 × 4,401.84
  4. Step 4: Simplify right side
    12,609.84x = 83,296,986.72
  5. Step 5: Solve for x
    x = 83,296,986.72/12,609.84
  6. Step 6: Final answer
    x = 6,605.71

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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.