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Finding the Fourth Proportional to 188,407.15, 259,996.44 and 107,831.94

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Solution

The fourth proportional to 188,407.15, 259,996.44 and 107,831.94 is: 148,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,407.15 : 259,996.44 = 107,831.94 : x
  2. Step 2: Convert to fraction form
    188,407.15/259,996.44 = 107,831.94/x
  3. Step 3: Cross multiply
    188,407.15x = 259,996.44 × 107,831.94
  4. Step 4: Simplify right side
    188,407.15x = 28,035,920,518.29
  5. Step 5: Solve for x
    x = 28,035,920,518.29/188,407.15
  6. Step 6: Final answer
    x = 148,804.97

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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.