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Finding the Fourth Proportional to 198,620.06, 297,939.18 and 65,511.94

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Solution

The fourth proportional to 198,620.06, 297,939.18 and 65,511.94 is: 98,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,620.06 : 297,939.18 = 65,511.94 : x
  2. Step 2: Convert to fraction form
    198,620.06/297,939.18 = 65,511.94/x
  3. Step 3: Cross multiply
    198,620.06x = 297,939.18 × 65,511.94
  4. Step 4: Simplify right side
    198,620.06x = 19,518,573,683.81
  5. Step 5: Solve for x
    x = 19,518,573,683.81/198,620.06
  6. Step 6: Final answer
    x = 98,270.91

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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.