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Finding the Fourth Proportional to 41,013.77, 61,515.78 and 13,311.77

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Solution

The fourth proportional to 41,013.77, 61,515.78 and 13,311.77 is: 19,966.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,013.77 : 61,515.78 = 13,311.77 : x
  2. Step 2: Convert to fraction form
    41,013.77/61,515.78 = 13,311.77/x
  3. Step 3: Cross multiply
    41,013.77x = 61,515.78 × 13,311.77
  4. Step 4: Simplify right side
    41,013.77x = 818,883,914.73
  5. Step 5: Solve for x
    x = 818,883,914.73/41,013.77
  6. Step 6: Final answer
    x = 19,966.07

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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.