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Finding the Fourth Proportional to 380,786.58, 571,179.87 and 193,929.30

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Solution

The fourth proportional to 380,786.58, 571,179.87 and 193,929.30 is: 290,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,786.58 : 571,179.87 = 193,929.30 : x
  2. Step 2: Convert to fraction form
    380,786.58/571,179.87 = 193,929.30/x
  3. Step 3: Cross multiply
    380,786.58x = 571,179.87 × 193,929.30
  4. Step 4: Simplify right side
    380,786.58x = 110,768,512,363.19
  5. Step 5: Solve for x
    x = 110,768,512,363.19/380,786.58
  6. Step 6: Final answer
    x = 290,893.95

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Similar ratio
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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.