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Finding the Fourth Proportional to 198,610.79, 274,122.72 and 118,022.74

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Solution

The fourth proportional to 198,610.79, 274,122.72 and 118,022.74 is: 162,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,610.79 : 274,122.72 = 118,022.74 : x
  2. Step 2: Convert to fraction form
    198,610.79/274,122.72 = 118,022.74/x
  3. Step 3: Cross multiply
    198,610.79x = 274,122.72 × 118,022.74
  4. Step 4: Simplify right side
    198,610.79x = 32,352,713,825.35
  5. Step 5: Solve for x
    x = 32,352,713,825.35/198,610.79
  6. Step 6: Final answer
    x = 162,895.05

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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.