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Finding the Fourth Proportional to 263,326.40, 395,081.76 and 76,349.12

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Solution

The fourth proportional to 263,326.40, 395,081.76 and 76,349.12 is: 114,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,326.40 : 395,081.76 = 76,349.12 : x
  2. Step 2: Convert to fraction form
    263,326.40/395,081.76 = 76,349.12/x
  3. Step 3: Cross multiply
    263,326.40x = 395,081.76 × 76,349.12
  4. Step 4: Simplify right side
    263,326.40x = 30,164,144,704.05
  5. Step 5: Solve for x
    x = 30,164,144,704.05/263,326.40
  6. Step 6: Final answer
    x = 114,550.40

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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.