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Finding the Fourth Proportional to 96,705.72, 145,280.97 and 68,693.94

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Solution

The fourth proportional to 96,705.72, 145,280.97 and 68,693.94 is: 103,198.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,705.72 : 145,280.97 = 68,693.94 : x
  2. Step 2: Convert to fraction form
    96,705.72/145,280.97 = 68,693.94/x
  3. Step 3: Cross multiply
    96,705.72x = 145,280.97 × 68,693.94
  4. Step 4: Simplify right side
    96,705.72x = 9,979,922,236.32
  5. Step 5: Solve for x
    x = 9,979,922,236.32/96,705.72
  6. Step 6: Final answer
    x = 103,198.88

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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.