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Finding the Fourth Proportional to 613,212.40, 919,965.66 and 192,488.32

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Solution

The fourth proportional to 613,212.40, 919,965.66 and 192,488.32 is: 288,778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,212.40 : 919,965.66 = 192,488.32 : x
  2. Step 2: Convert to fraction form
    613,212.40/919,965.66 = 192,488.32/x
  3. Step 3: Cross multiply
    613,212.40x = 919,965.66 × 192,488.32
  4. Step 4: Simplify right side
    613,212.40x = 177,082,644,351.09
  5. Step 5: Solve for x
    x = 177,082,644,351.09/613,212.40
  6. Step 6: Final answer
    x = 288,778.64

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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.