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Finding the Fourth Proportional to 360,815.13, 541,211.50 and 171,411.79

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Solution

The fourth proportional to 360,815.13, 541,211.50 and 171,411.79 is: 257,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,815.13 : 541,211.50 = 171,411.79 : x
  2. Step 2: Convert to fraction form
    360,815.13/541,211.50 = 171,411.79/x
  3. Step 3: Cross multiply
    360,815.13x = 541,211.50 × 171,411.79
  4. Step 4: Simplify right side
    360,815.13x = 92,770,031,983.59
  5. Step 5: Solve for x
    x = 92,770,031,983.59/360,815.13
  6. Step 6: Final answer
    x = 257,112.37

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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.