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Finding the Fourth Proportional to 109,470.98, 151,069.70 and 61,724.04

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Solution

The fourth proportional to 109,470.98, 151,069.70 and 61,724.04 is: 85,179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,470.98 : 151,069.70 = 61,724.04 : x
  2. Step 2: Convert to fraction form
    109,470.98/151,069.70 = 61,724.04/x
  3. Step 3: Cross multiply
    109,470.98x = 151,069.70 × 61,724.04
  4. Step 4: Simplify right side
    109,470.98x = 9,324,631,896.97
  5. Step 5: Solve for x
    x = 9,324,631,896.97/109,470.98
  6. Step 6: Final answer
    x = 85,179.03

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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.