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Finding the Fourth Proportional to 317,863.96, 438,676.85 and 181,940.55

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Solution

The fourth proportional to 317,863.96, 438,676.85 and 181,940.55 is: 251,092.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,863.96 : 438,676.85 = 181,940.55 : x
  2. Step 2: Convert to fraction form
    317,863.96/438,676.85 = 181,940.55/x
  3. Step 3: Cross multiply
    317,863.96x = 438,676.85 × 181,940.55
  4. Step 4: Simplify right side
    317,863.96x = 79,813,106,171.08
  5. Step 5: Solve for x
    x = 79,813,106,171.08/317,863.96
  6. Step 6: Final answer
    x = 251,092.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.