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Finding the Fourth Proportional to 194,479, 268,381.26 and 105,055

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Solution

The fourth proportional to 194,479, 268,381.26 and 105,055 is: 144,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,479 : 268,381.26 = 105,055 : x
  2. Step 2: Convert to fraction form
    194,479/268,381.26 = 105,055/x
  3. Step 3: Cross multiply
    194,479x = 268,381.26 × 105,055
  4. Step 4: Simplify right side
    194,479x = 28,194,793,269.30
  5. Step 5: Solve for x
    x = 28,194,793,269.30/194,479
  6. Step 6: Final answer
    x = 144,976.03

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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.