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Finding the Fourth Proportional to 505,520.86, 697,618.29 and 279,165.82

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Solution

The fourth proportional to 505,520.86, 697,618.29 and 279,165.82 is: 385,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,520.86 : 697,618.29 = 279,165.82 : x
  2. Step 2: Convert to fraction form
    505,520.86/697,618.29 = 279,165.82/x
  3. Step 3: Cross multiply
    505,520.86x = 697,618.29 × 279,165.82
  4. Step 4: Simplify right side
    505,520.86x = 194,751,181,974.85
  5. Step 5: Solve for x
    x = 194,751,181,974.85/505,520.86
  6. Step 6: Final answer
    x = 385,248.56

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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.