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Finding the Fourth Proportional to 129,818.97, 194,649.89 and 63,192.42

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Solution

The fourth proportional to 129,818.97, 194,649.89 and 63,192.42 is: 94,750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,818.97 : 194,649.89 = 63,192.42 : x
  2. Step 2: Convert to fraction form
    129,818.97/194,649.89 = 63,192.42/x
  3. Step 3: Cross multiply
    129,818.97x = 194,649.89 × 63,192.42
  4. Step 4: Simplify right side
    129,818.97x = 12,300,397,285.87
  5. Step 5: Solve for x
    x = 12,300,397,285.87/129,818.97
  6. Step 6: Final answer
    x = 94,750.38

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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.