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Finding the Fourth Proportional to 19,873.95, 29,809.09 and 6,724.81

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Solution

The fourth proportional to 19,873.95, 29,809.09 and 6,724.81 is: 10,086.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.95 : 29,809.09 = 6,724.81 : x
  2. Step 2: Convert to fraction form
    19,873.95/29,809.09 = 6,724.81/x
  3. Step 3: Cross multiply
    19,873.95x = 29,809.09 × 6,724.81
  4. Step 4: Simplify right side
    19,873.95x = 200,460,466.52
  5. Step 5: Solve for x
    x = 200,460,466.52/19,873.95
  6. Step 6: Final answer
    x = 10,086.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.