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Finding the Fourth Proportional to 298,999.70, 447,721.95 and 193,246.10

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Solution

The fourth proportional to 298,999.70, 447,721.95 and 193,246.10 is: 289,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,999.70 : 447,721.95 = 193,246.10 : x
  2. Step 2: Convert to fraction form
    298,999.70/447,721.95 = 193,246.10/x
  3. Step 3: Cross multiply
    298,999.70x = 447,721.95 × 193,246.10
  4. Step 4: Simplify right side
    298,999.70x = 86,520,520,721.90
  5. Step 5: Solve for x
    x = 86,520,520,721.90/298,999.70
  6. Step 6: Final answer
    x = 289,366.58

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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.