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Finding the Fourth Proportional to 194,679.39, 268,657.53 and 105,255.39

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Solution

The fourth proportional to 194,679.39, 268,657.53 and 105,255.39 is: 145,252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,679.39 : 268,657.53 = 105,255.39 : x
  2. Step 2: Convert to fraction form
    194,679.39/268,657.53 = 105,255.39/x
  3. Step 3: Cross multiply
    194,679.39x = 268,657.53 × 105,255.39
  4. Step 4: Simplify right side
    194,679.39x = 28,277,653,096.59
  5. Step 5: Solve for x
    x = 28,277,653,096.59/194,679.39
  6. Step 6: Final answer
    x = 145,252.42

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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.