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Finding the Fourth Proportional to 505,811.34, 698,011.32 and 276,363.54

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Solution

The fourth proportional to 505,811.34, 698,011.32 and 276,363.54 is: 381,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,811.34 : 698,011.32 = 276,363.54 : x
  2. Step 2: Convert to fraction form
    505,811.34/698,011.32 = 276,363.54/x
  3. Step 3: Cross multiply
    505,811.34x = 698,011.32 × 276,363.54
  4. Step 4: Simplify right side
    505,811.34x = 192,904,879,355.27
  5. Step 5: Solve for x
    x = 192,904,879,355.27/505,811.34
  6. Step 6: Final answer
    x = 381,377.13

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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.