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Finding the Fourth Proportional to 493,961.96, 681,680.81 and 279,097.11

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Solution

The fourth proportional to 493,961.96, 681,680.81 and 279,097.11 is: 385,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,961.96 : 681,680.81 = 279,097.11 : x
  2. Step 2: Convert to fraction form
    493,961.96/681,680.81 = 279,097.11/x
  3. Step 3: Cross multiply
    493,961.96x = 681,680.81 × 279,097.11
  4. Step 4: Simplify right side
    493,961.96x = 190,255,144,711.20
  5. Step 5: Solve for x
    x = 190,255,144,711.20/493,961.96
  6. Step 6: Final answer
    x = 385,161.53

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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.