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Finding the Fourth Proportional to 303,933.44, 455,859.12 and 79,309.64

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Solution

The fourth proportional to 303,933.44, 455,859.12 and 79,309.64 is: 118,953.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,933.44 : 455,859.12 = 79,309.64 : x
  2. Step 2: Convert to fraction form
    303,933.44/455,859.12 = 79,309.64/x
  3. Step 3: Cross multiply
    303,933.44x = 455,859.12 × 79,309.64
  4. Step 4: Simplify right side
    303,933.44x = 36,154,022,697.92
  5. Step 5: Solve for x
    x = 36,154,022,697.92/303,933.44
  6. Step 6: Final answer
    x = 118,953.75

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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.