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Finding the Fourth Proportional to 171,082.20, 257,060.70 and 151,836.60

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Solution

The fourth proportional to 171,082.20, 257,060.70 and 151,836.60 is: 228,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,082.20 : 257,060.70 = 151,836.60 : x
  2. Step 2: Convert to fraction form
    171,082.20/257,060.70 = 151,836.60/x
  3. Step 3: Cross multiply
    171,082.20x = 257,060.70 × 151,836.60
  4. Step 4: Simplify right side
    171,082.20x = 39,031,222,681.62
  5. Step 5: Solve for x
    x = 39,031,222,681.62/171,082.20
  6. Step 6: Final answer
    x = 228,143.10

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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.