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Finding the Fourth Proportional to 188,671.36, 260,364.60 and 103,788.52

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Solution

The fourth proportional to 188,671.36, 260,364.60 and 103,788.52 is: 143,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,671.36 : 260,364.60 = 103,788.52 : x
  2. Step 2: Convert to fraction form
    188,671.36/260,364.60 = 103,788.52/x
  3. Step 3: Cross multiply
    188,671.36x = 260,364.60 × 103,788.52
  4. Step 4: Simplify right side
    188,671.36x = 27,022,856,494.39
  5. Step 5: Solve for x
    x = 27,022,856,494.39/188,671.36
  6. Step 6: Final answer
    x = 143,227.13

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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.