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Finding the Fourth Proportional to 328,876.38, 453,851.64 and 192,990.78

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Solution

The fourth proportional to 328,876.38, 453,851.64 and 192,990.78 is: 266,328.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,876.38 : 453,851.64 = 192,990.78 : x
  2. Step 2: Convert to fraction form
    328,876.38/453,851.64 = 192,990.78/x
  3. Step 3: Cross multiply
    328,876.38x = 453,851.64 × 192,990.78
  4. Step 4: Simplify right side
    328,876.38x = 87,589,182,007.88
  5. Step 5: Solve for x
    x = 87,589,182,007.88/328,876.38
  6. Step 6: Final answer
    x = 266,328.59

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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.