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Finding the Fourth Proportional to 188,071.98, 259,539.58 and 103,189.38

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Solution

The fourth proportional to 188,071.98, 259,539.58 and 103,189.38 is: 142,401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,071.98 : 259,539.58 = 103,189.38 : x
  2. Step 2: Convert to fraction form
    188,071.98/259,539.58 = 103,189.38/x
  3. Step 3: Cross multiply
    188,071.98x = 259,539.58 × 103,189.38
  4. Step 4: Simplify right side
    188,071.98x = 26,781,728,345.66
  5. Step 5: Solve for x
    x = 26,781,728,345.66/188,071.98
  6. Step 6: Final answer
    x = 142,401.48

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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.