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Finding the Fourth Proportional to 316,000.62, 436,082.36 and 172,760.63

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Solution

The fourth proportional to 316,000.62, 436,082.36 and 172,760.63 is: 238,410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,000.62 : 436,082.36 = 172,760.63 : x
  2. Step 2: Convert to fraction form
    316,000.62/436,082.36 = 172,760.63/x
  3. Step 3: Cross multiply
    316,000.62x = 436,082.36 × 172,760.63
  4. Step 4: Simplify right side
    316,000.62x = 75,337,860,201.27
  5. Step 5: Solve for x
    x = 75,337,860,201.27/316,000.62
  6. Step 6: Final answer
    x = 238,410.48

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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.