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Finding the Fourth Proportional to 156,793.20, 235,189.80 and 51,586.80

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Solution

The fourth proportional to 156,793.20, 235,189.80 and 51,586.80 is: 77,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,793.20 : 235,189.80 = 51,586.80 : x
  2. Step 2: Convert to fraction form
    156,793.20/235,189.80 = 51,586.80/x
  3. Step 3: Cross multiply
    156,793.20x = 235,189.80 × 51,586.80
  4. Step 4: Simplify right side
    156,793.20x = 12,132,689,174.64
  5. Step 5: Solve for x
    x = 12,132,689,174.64/156,793.20
  6. Step 6: Final answer
    x = 77,380.20

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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.