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Finding the Fourth Proportional to 272,957.70, 408,464.55 and 173,165.70

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Solution

The fourth proportional to 272,957.70, 408,464.55 and 173,165.70 is: 259,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,957.70 : 408,464.55 = 173,165.70 : x
  2. Step 2: Convert to fraction form
    272,957.70/408,464.55 = 173,165.70/x
  3. Step 3: Cross multiply
    272,957.70x = 408,464.55 × 173,165.70
  4. Step 4: Simplify right side
    272,957.70x = 70,732,049,725.94
  5. Step 5: Solve for x
    x = 70,732,049,725.94/272,957.70
  6. Step 6: Final answer
    x = 259,131.91

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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.