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Finding the Fourth Proportional to 194,603.89, 268,553.24 and 105,179.89

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Solution

The fourth proportional to 194,603.89, 268,553.24 and 105,179.89 is: 145,148.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,603.89 : 268,553.24 = 105,179.89 : x
  2. Step 2: Convert to fraction form
    194,603.89/268,553.24 = 105,179.89/x
  3. Step 3: Cross multiply
    194,603.89x = 268,553.24 × 105,179.89
  4. Step 4: Simplify right side
    194,603.89x = 28,246,398,899.58
  5. Step 5: Solve for x
    x = 28,246,398,899.58/194,603.89
  6. Step 6: Final answer
    x = 145,148.18

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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.