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Finding the Fourth Proportional to 479,393.91, 719,411.63 and 198,911.16

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Solution

The fourth proportional to 479,393.91, 719,411.63 and 198,911.16 is: 298,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,393.91 : 719,411.63 = 198,911.16 : x
  2. Step 2: Convert to fraction form
    479,393.91/719,411.63 = 198,911.16/x
  3. Step 3: Cross multiply
    479,393.91x = 719,411.63 × 198,911.16
  4. Step 4: Simplify right side
    479,393.91x = 143,099,000,846.24
  5. Step 5: Solve for x
    x = 143,099,000,846.24/479,393.91
  6. Step 6: Final answer
    x = 298,499.83

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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.