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Finding the Fourth Proportional to 171,872.60, 257,079.90 and 154,230.80

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Solution

The fourth proportional to 171,872.60, 257,079.90 and 154,230.80 is: 230,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,872.60 : 257,079.90 = 154,230.80 : x
  2. Step 2: Convert to fraction form
    171,872.60/257,079.90 = 154,230.80/x
  3. Step 3: Cross multiply
    171,872.60x = 257,079.90 × 154,230.80
  4. Step 4: Simplify right side
    171,872.60x = 39,649,638,640.92
  5. Step 5: Solve for x
    x = 39,649,638,640.92/171,872.60
  6. Step 6: Final answer
    x = 230,692.03

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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.