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Finding the Fourth Proportional to 123,861.84, 185,745.21 and 52,739.39

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Solution

The fourth proportional to 123,861.84, 185,745.21 and 52,739.39 is: 79,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,861.84 : 185,745.21 = 52,739.39 : x
  2. Step 2: Convert to fraction form
    123,861.84/185,745.21 = 52,739.39/x
  3. Step 3: Cross multiply
    123,861.84x = 185,745.21 × 52,739.39
  4. Step 4: Simplify right side
    123,861.84x = 9,796,088,142.10
  5. Step 5: Solve for x
    x = 9,796,088,142.10/123,861.84
  6. Step 6: Final answer
    x = 79,088.83

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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.