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Finding the Fourth Proportional to 376,731.78, 565,134.99 and 120,499.98

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Solution

The fourth proportional to 376,731.78, 565,134.99 and 120,499.98 is: 180,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,731.78 : 565,134.99 = 120,499.98 : x
  2. Step 2: Convert to fraction form
    376,731.78/565,134.99 = 120,499.98/x
  3. Step 3: Cross multiply
    376,731.78x = 565,134.99 × 120,499.98
  4. Step 4: Simplify right side
    376,731.78x = 68,098,754,992.30
  5. Step 5: Solve for x
    x = 68,098,754,992.30/376,731.78
  6. Step 6: Final answer
    x = 180,761.91

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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.