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Finding the Fourth Proportional to 45,782.04, 68,667.78 and 12,504.78

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Solution

The fourth proportional to 45,782.04, 68,667.78 and 12,504.78 is: 18,755.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,782.04 : 68,667.78 = 12,504.78 : x
  2. Step 2: Convert to fraction form
    45,782.04/68,667.78 = 12,504.78/x
  3. Step 3: Cross multiply
    45,782.04x = 68,667.78 × 12,504.78
  4. Step 4: Simplify right side
    45,782.04x = 858,675,423.37
  5. Step 5: Solve for x
    x = 858,675,423.37/45,782.04
  6. Step 6: Final answer
    x = 18,755.73

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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.