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Finding the Fourth Proportional to 505,881.57, 698,118.39 and 276,438.84

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Solution

The fourth proportional to 505,881.57, 698,118.39 and 276,438.84 is: 381,486.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,881.57 : 698,118.39 = 276,438.84 : x
  2. Step 2: Convert to fraction form
    505,881.57/698,118.39 = 276,438.84/x
  3. Step 3: Cross multiply
    505,881.57x = 698,118.39 × 276,438.84
  4. Step 4: Simplify right side
    505,881.57x = 192,987,037,914.27
  5. Step 5: Solve for x
    x = 192,987,037,914.27/505,881.57
  6. Step 6: Final answer
    x = 381,486.60

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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.