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Finding the Fourth Proportional to 519,161.13, 779,405.90 and 440,773.38

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Solution

The fourth proportional to 519,161.13, 779,405.90 and 440,773.38 is: 661,723.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,161.13 : 779,405.90 = 440,773.38 : x
  2. Step 2: Convert to fraction form
    519,161.13/779,405.90 = 440,773.38/x
  3. Step 3: Cross multiply
    519,161.13x = 779,405.90 × 440,773.38
  4. Step 4: Simplify right side
    519,161.13x = 343,541,370,731.08
  5. Step 5: Solve for x
    x = 343,541,370,731.08/519,161.13
  6. Step 6: Final answer
    x = 661,723.98

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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.