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Finding the Fourth Proportional to 505,764.69, 698,003.55 and 276,356.85

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Solution

The fourth proportional to 505,764.69, 698,003.55 and 276,356.85 is: 381,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,764.69 : 698,003.55 = 276,356.85 : x
  2. Step 2: Convert to fraction form
    505,764.69/698,003.55 = 276,356.85/x
  3. Step 3: Cross multiply
    505,764.69x = 698,003.55 × 276,356.85
  4. Step 4: Simplify right side
    505,764.69x = 192,898,062,366.82
  5. Step 5: Solve for x
    x = 192,898,062,366.82/505,764.69
  6. Step 6: Final answer
    x = 381,398.83

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1.5x scale

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.