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Finding the Fourth Proportional to 129,898.62, 194,855.49 and 36,411.66

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Solution

The fourth proportional to 129,898.62, 194,855.49 and 36,411.66 is: 54,619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,898.62 : 194,855.49 = 36,411.66 : x
  2. Step 2: Convert to fraction form
    129,898.62/194,855.49 = 36,411.66/x
  3. Step 3: Cross multiply
    129,898.62x = 194,855.49 × 36,411.66
  4. Step 4: Simplify right side
    129,898.62x = 7,095,011,851.01
  5. Step 5: Solve for x
    x = 7,095,011,851.01/129,898.62
  6. Step 6: Final answer
    x = 54,619.61

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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.