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Finding the Fourth Proportional to 194,655, 268,623.96 and 105,231

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Solution

The fourth proportional to 194,655, 268,623.96 and 105,231 is: 145,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,655 : 268,623.96 = 105,231 : x
  2. Step 2: Convert to fraction form
    194,655/268,623.96 = 105,231/x
  3. Step 3: Cross multiply
    194,655x = 268,623.96 × 105,231
  4. Step 4: Simplify right side
    194,655x = 28,267,567,934.76
  5. Step 5: Solve for x
    x = 28,267,567,934.76/194,655
  6. Step 6: Final answer
    x = 145,218.81

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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.