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Finding the Fourth Proportional to 351,971.83, 485,718.18 and 199,040.05

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Solution

The fourth proportional to 351,971.83, 485,718.18 and 199,040.05 is: 274,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,971.83 : 485,718.18 = 199,040.05 : x
  2. Step 2: Convert to fraction form
    351,971.83/485,718.18 = 199,040.05/x
  3. Step 3: Cross multiply
    351,971.83x = 485,718.18 × 199,040.05
  4. Step 4: Simplify right side
    351,971.83x = 96,677,370,833.11
  5. Step 5: Solve for x
    x = 96,677,370,833.11/351,971.83
  6. Step 6: Final answer
    x = 274,673.60

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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.