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Finding the Fourth Proportional to 512,083.20, 768,124.80 and 157,096.65

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Solution

The fourth proportional to 512,083.20, 768,124.80 and 157,096.65 is: 235,644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,083.20 : 768,124.80 = 157,096.65 : x
  2. Step 2: Convert to fraction form
    512,083.20/768,124.80 = 157,096.65/x
  3. Step 3: Cross multiply
    512,083.20x = 768,124.80 × 157,096.65
  4. Step 4: Simplify right side
    512,083.20x = 120,669,832,861.92
  5. Step 5: Solve for x
    x = 120,669,832,861.92/512,083.20
  6. Step 6: Final answer
    x = 235,644.98

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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.