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Finding the Fourth Proportional to 188,761.87, 260,497.50 and 108,204.64

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Solution

The fourth proportional to 188,761.87, 260,497.50 and 108,204.64 is: 149,325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,761.87 : 260,497.50 = 108,204.64 : x
  2. Step 2: Convert to fraction form
    188,761.87/260,497.50 = 108,204.64/x
  3. Step 3: Cross multiply
    188,761.87x = 260,497.50 × 108,204.64
  4. Step 4: Simplify right side
    188,761.87x = 28,187,038,208.40
  5. Step 5: Solve for x
    x = 28,187,038,208.40/188,761.87
  6. Step 6: Final answer
    x = 149,325.91

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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.