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Finding the Fourth Proportional to 194,958.78, 269,043.17 and 105,534.78

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Solution

The fourth proportional to 194,958.78, 269,043.17 and 105,534.78 is: 145,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,958.78 : 269,043.17 = 105,534.78 : x
  2. Step 2: Convert to fraction form
    194,958.78/269,043.17 = 105,534.78/x
  3. Step 3: Cross multiply
    194,958.78x = 269,043.17 × 105,534.78
  4. Step 4: Simplify right side
    194,958.78x = 28,393,411,228.78
  5. Step 5: Solve for x
    x = 28,393,411,228.78/194,958.78
  6. Step 6: Final answer
    x = 145,638.02

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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.