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Finding the Fourth Proportional to 188,401.87, 259,991.58 and 103,517.11

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Solution

The fourth proportional to 188,401.87, 259,991.58 and 103,517.11 is: 142,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,401.87 : 259,991.58 = 103,517.11 : x
  2. Step 2: Convert to fraction form
    188,401.87/259,991.58 = 103,517.11/x
  3. Step 3: Cross multiply
    188,401.87x = 259,991.58 × 103,517.11
  4. Step 4: Simplify right side
    188,401.87x = 26,913,576,985.93
  5. Step 5: Solve for x
    x = 26,913,576,985.93/188,401.87
  6. Step 6: Final answer
    x = 142,851.96

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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.