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Finding the Fourth Proportional to 188,548.78, 260,198.28 and 103,671.30

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Solution

The fourth proportional to 188,548.78, 260,198.28 and 103,671.30 is: 143,066.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,548.78 : 260,198.28 = 103,671.30 : x
  2. Step 2: Convert to fraction form
    188,548.78/260,198.28 = 103,671.30/x
  3. Step 3: Cross multiply
    188,548.78x = 260,198.28 × 103,671.30
  4. Step 4: Simplify right side
    188,548.78x = 26,975,093,945.36
  5. Step 5: Solve for x
    x = 26,975,093,945.36/188,548.78
  6. Step 6: Final answer
    x = 143,066.92

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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.