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Finding the Fourth Proportional to 202,380.65, 303,515.54 and 76,011.12

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Solution

The fourth proportional to 202,380.65, 303,515.54 and 76,011.12 is: 113,995.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,380.65 : 303,515.54 = 76,011.12 : x
  2. Step 2: Convert to fraction form
    202,380.65/303,515.54 = 76,011.12/x
  3. Step 3: Cross multiply
    202,380.65x = 303,515.54 × 76,011.12
  4. Step 4: Simplify right side
    202,380.65x = 23,070,555,752.75
  5. Step 5: Solve for x
    x = 23,070,555,752.75/202,380.65
  6. Step 6: Final answer
    x = 113,995.86

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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.