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Finding the Fourth Proportional to 263,632.14, 395,515.62 and 76,643.64

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Solution

The fourth proportional to 263,632.14, 395,515.62 and 76,643.64 is: 114,985.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,632.14 : 395,515.62 = 76,643.64 : x
  2. Step 2: Convert to fraction form
    263,632.14/395,515.62 = 76,643.64/x
  3. Step 3: Cross multiply
    263,632.14x = 395,515.62 × 76,643.64
  4. Step 4: Simplify right side
    263,632.14x = 30,313,756,793.66
  5. Step 5: Solve for x
    x = 30,313,756,793.66/263,632.14
  6. Step 6: Final answer
    x = 114,985.06

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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.