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Finding the Fourth Proportional to 518,630.58, 777,502.11 and 199,011.80

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Solution

The fourth proportional to 518,630.58, 777,502.11 and 199,011.80 is: 298,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,630.58 : 777,502.11 = 199,011.80 : x
  2. Step 2: Convert to fraction form
    518,630.58/777,502.11 = 199,011.80/x
  3. Step 3: Cross multiply
    518,630.58x = 777,502.11 × 199,011.80
  4. Step 4: Simplify right side
    518,630.58x = 154,732,094,414.90
  5. Step 5: Solve for x
    x = 154,732,094,414.90/518,630.58
  6. Step 6: Final answer
    x = 298,347.42

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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.