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Finding the Fourth Proportional to 35,356.83, 48,786.87 and 20,245.89

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Solution

The fourth proportional to 35,356.83, 48,786.87 and 20,245.89 is: 27,936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,356.83 : 48,786.87 = 20,245.89 : x
  2. Step 2: Convert to fraction form
    35,356.83/48,786.87 = 20,245.89/x
  3. Step 3: Cross multiply
    35,356.83x = 48,786.87 × 20,245.89
  4. Step 4: Simplify right side
    35,356.83x = 987,733,603.46
  5. Step 5: Solve for x
    x = 987,733,603.46/35,356.83
  6. Step 6: Final answer
    x = 27,936.15

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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.