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Finding the Fourth Proportional to 171,747.81, 257,592.15 and 45,389.43

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Solution

The fourth proportional to 171,747.81, 257,592.15 and 45,389.43 is: 68,076.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,747.81 : 257,592.15 = 45,389.43 : x
  2. Step 2: Convert to fraction form
    171,747.81/257,592.15 = 45,389.43/x
  3. Step 3: Cross multiply
    171,747.81x = 257,592.15 × 45,389.43
  4. Step 4: Simplify right side
    171,747.81x = 11,691,960,860.97
  5. Step 5: Solve for x
    x = 11,691,960,860.97/171,747.81
  6. Step 6: Final answer
    x = 68,076.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.