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Finding the Fourth Proportional to 519,697.72, 779,486.10 and 140,600.44

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Solution

The fourth proportional to 519,697.72, 779,486.10 and 140,600.44 is: 210,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,697.72 : 779,486.10 = 140,600.44 : x
  2. Step 2: Convert to fraction form
    519,697.72/779,486.10 = 140,600.44/x
  3. Step 3: Cross multiply
    519,697.72x = 779,486.10 × 140,600.44
  4. Step 4: Simplify right side
    519,697.72x = 109,596,088,633.88
  5. Step 5: Solve for x
    x = 109,596,088,633.88/519,697.72
  6. Step 6: Final answer
    x = 210,884.30

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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.