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Finding the Fourth Proportional to 199,363.68, 299,015.82 and 81,034.56

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Solution

The fourth proportional to 199,363.68, 299,015.82 and 81,034.56 is: 121,539.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,363.68 : 299,015.82 = 81,034.56 : x
  2. Step 2: Convert to fraction form
    199,363.68/299,015.82 = 81,034.56/x
  3. Step 3: Cross multiply
    199,363.68x = 299,015.82 × 81,034.56
  4. Step 4: Simplify right side
    199,363.68x = 24,230,615,406.74
  5. Step 5: Solve for x
    x = 24,230,615,406.74/199,363.68
  6. Step 6: Final answer
    x = 121,539.77

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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.