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Finding the Fourth Proportional to 198,641.01, 274,118.82 and 112,607.97

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Solution

The fourth proportional to 198,641.01, 274,118.82 and 112,607.97 is: 155,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,641.01 : 274,118.82 = 112,607.97 : x
  2. Step 2: Convert to fraction form
    198,641.01/274,118.82 = 112,607.97/x
  3. Step 3: Cross multiply
    198,641.01x = 274,118.82 × 112,607.97
  4. Step 4: Simplify right side
    198,641.01x = 30,867,963,859.00
  5. Step 5: Solve for x
    x = 30,867,963,859.00/198,641.01
  6. Step 6: Final answer
    x = 155,395.73

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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.