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Finding the Fourth Proportional to 311,628.51, 467,276.58 and 161,717.85

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Solution

The fourth proportional to 311,628.51, 467,276.58 and 161,717.85 is: 242,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,628.51 : 467,276.58 = 161,717.85 : x
  2. Step 2: Convert to fraction form
    311,628.51/467,276.58 = 161,717.85/x
  3. Step 3: Cross multiply
    311,628.51x = 467,276.58 × 161,717.85
  4. Step 4: Simplify right side
    311,628.51x = 75,566,963,872.95
  5. Step 5: Solve for x
    x = 75,566,963,872.95/311,628.51
  6. Step 6: Final answer
    x = 242,490.53

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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.