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Finding the Fourth Proportional to 613,642.30, 919,208.61 and 500,194.42

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Solution

The fourth proportional to 613,642.30, 919,208.61 and 500,194.42 is: 749,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,642.30 : 919,208.61 = 500,194.42 : x
  2. Step 2: Convert to fraction form
    613,642.30/919,208.61 = 500,194.42/x
  3. Step 3: Cross multiply
    613,642.30x = 919,208.61 × 500,194.42
  4. Step 4: Simplify right side
    613,642.30x = 459,783,015,239.94
  5. Step 5: Solve for x
    x = 459,783,015,239.94/613,642.30
  6. Step 6: Final answer
    x = 749,268.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.