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Finding the Fourth Proportional to 313,721.61, 470,374.38 and 114,018.27

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Solution

The fourth proportional to 313,721.61, 470,374.38 and 114,018.27 is: 170,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,721.61 : 470,374.38 = 114,018.27 : x
  2. Step 2: Convert to fraction form
    313,721.61/470,374.38 = 114,018.27/x
  3. Step 3: Cross multiply
    313,721.61x = 470,374.38 × 114,018.27
  4. Step 4: Simplify right side
    313,721.61x = 53,631,273,059.92
  5. Step 5: Solve for x
    x = 53,631,273,059.92/313,721.61
  6. Step 6: Final answer
    x = 170,951.80

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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.