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Finding the Fourth Proportional to 188,940.78, 260,732.96 and 102,897.82

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Solution

The fourth proportional to 188,940.78, 260,732.96 and 102,897.82 is: 141,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,940.78 : 260,732.96 = 102,897.82 : x
  2. Step 2: Convert to fraction form
    188,940.78/260,732.96 = 102,897.82/x
  3. Step 3: Cross multiply
    188,940.78x = 260,732.96 × 102,897.82
  4. Step 4: Simplify right side
    188,940.78x = 26,828,853,186.15
  5. Step 5: Solve for x
    x = 26,828,853,186.15/188,940.78
  6. Step 6: Final answer
    x = 141,996.10

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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.