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Finding the Fourth Proportional to 519,469.22, 779,143.34 and 140,371.94

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Solution

The fourth proportional to 519,469.22, 779,143.34 and 140,371.94 is: 210,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,469.22 : 779,143.34 = 140,371.94 : x
  2. Step 2: Convert to fraction form
    519,469.22/779,143.34 = 140,371.94/x
  3. Step 3: Cross multiply
    519,469.22x = 779,143.34 × 140,371.94
  4. Step 4: Simplify right side
    519,469.22x = 109,369,862,173.88
  5. Step 5: Solve for x
    x = 109,369,862,173.88/519,469.22
  6. Step 6: Final answer
    x = 210,541.56

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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.