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Finding the Fourth Proportional to 188,961.50, 260,744.19 and 108,384.86

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Solution

The fourth proportional to 188,961.50, 260,744.19 and 108,384.86 is: 149,558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,961.50 : 260,744.19 = 108,384.86 : x
  2. Step 2: Convert to fraction form
    188,961.50/260,744.19 = 108,384.86/x
  3. Step 3: Cross multiply
    188,961.50x = 260,744.19 × 108,384.86
  4. Step 4: Simplify right side
    188,961.50x = 28,260,722,528.96
  5. Step 5: Solve for x
    x = 28,260,722,528.96/188,961.50
  6. Step 6: Final answer
    x = 149,558.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.