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Finding the Fourth Proportional to 196,874.80, 271,592.76 and 128,861.84

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Solution

The fourth proportional to 196,874.80, 271,592.76 and 128,861.84 is: 177,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,874.80 : 271,592.76 = 128,861.84 : x
  2. Step 2: Convert to fraction form
    196,874.80/271,592.76 = 128,861.84/x
  3. Step 3: Cross multiply
    196,874.80x = 271,592.76 × 128,861.84
  4. Step 4: Simplify right side
    196,874.80x = 34,997,942,784.28
  5. Step 5: Solve for x
    x = 34,997,942,784.28/196,874.80
  6. Step 6: Final answer
    x = 177,767.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.