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Finding the Fourth Proportional to 328,821.77, 491,807.83 and 193,563.56

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Solution

The fourth proportional to 328,821.77, 491,807.83 and 193,563.56 is: 289,506.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,821.77 : 491,807.83 = 193,563.56 : x
  2. Step 2: Convert to fraction form
    328,821.77/491,807.83 = 193,563.56/x
  3. Step 3: Cross multiply
    328,821.77x = 491,807.83 × 193,563.56
  4. Step 4: Simplify right side
    328,821.77x = 95,196,074,410.67
  5. Step 5: Solve for x
    x = 95,196,074,410.67/328,821.77
  6. Step 6: Final answer
    x = 289,506.61

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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.