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Finding the Fourth Proportional to 38,181.87, 57,265.25 and 12,878.88

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Solution

The fourth proportional to 38,181.87, 57,265.25 and 12,878.88 is: 19,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,181.87 : 57,265.25 = 12,878.88 : x
  2. Step 2: Convert to fraction form
    38,181.87/57,265.25 = 12,878.88/x
  3. Step 3: Cross multiply
    38,181.87x = 57,265.25 × 12,878.88
  4. Step 4: Simplify right side
    38,181.87x = 737,512,218.53
  5. Step 5: Solve for x
    x = 737,512,218.53/38,181.87
  6. Step 6: Final answer
    x = 19,315.77

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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.