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Finding the Fourth Proportional to 317,336.44, 476,005.78 and 80,679.15

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Solution

The fourth proportional to 317,336.44, 476,005.78 and 80,679.15 is: 121,019.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,336.44 : 476,005.78 = 80,679.15 : x
  2. Step 2: Convert to fraction form
    317,336.44/476,005.78 = 80,679.15/x
  3. Step 3: Cross multiply
    317,336.44x = 476,005.78 × 80,679.15
  4. Step 4: Simplify right side
    317,336.44x = 38,403,741,725.49
  5. Step 5: Solve for x
    x = 38,403,741,725.49/317,336.44
  6. Step 6: Final answer
    x = 121,019.01

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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.