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Finding the Fourth Proportional to 505,535.87, 697,643.58 and 279,181.37

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Solution

The fourth proportional to 505,535.87, 697,643.58 and 279,181.37 is: 385,272.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,535.87 : 697,643.58 = 279,181.37 : x
  2. Step 2: Convert to fraction form
    505,535.87/697,643.58 = 279,181.37/x
  3. Step 3: Cross multiply
    505,535.87x = 697,643.58 × 279,181.37
  4. Step 4: Simplify right side
    505,535.87x = 194,769,085,551.98
  5. Step 5: Solve for x
    x = 194,769,085,551.98/505,535.87
  6. Step 6: Final answer
    x = 385,272.54

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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.