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Finding the Fourth Proportional to 188,605.40, 260,278.62 and 108,039.96

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Solution

The fourth proportional to 188,605.40, 260,278.62 and 108,039.96 is: 149,096.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,605.40 : 260,278.62 = 108,039.96 : x
  2. Step 2: Convert to fraction form
    188,605.40/260,278.62 = 108,039.96/x
  3. Step 3: Cross multiply
    188,605.40x = 260,278.62 × 108,039.96
  4. Step 4: Simplify right side
    188,605.40x = 28,120,491,288.51
  5. Step 5: Solve for x
    x = 28,120,491,288.51/188,605.40
  6. Step 6: Final answer
    x = 149,096.96

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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.