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Finding the Fourth Proportional to 194,431.70, 268,315.69 and 105,007.70

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Solution

The fourth proportional to 194,431.70, 268,315.69 and 105,007.70 is: 144,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,431.70 : 268,315.69 = 105,007.70 : x
  2. Step 2: Convert to fraction form
    194,431.70/268,315.69 = 105,007.70/x
  3. Step 3: Cross multiply
    194,431.70x = 268,315.69 × 105,007.70
  4. Step 4: Simplify right side
    194,431.70x = 28,175,213,480.81
  5. Step 5: Solve for x
    x = 28,175,213,480.81/194,431.70
  6. Step 6: Final answer
    x = 144,910.60

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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.