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Finding the Fourth Proportional to 619,434.30, 854,737.50 and 347,491.79

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Solution

The fourth proportional to 619,434.30, 854,737.50 and 347,491.79 is: 479,492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,434.30 : 854,737.50 = 347,491.79 : x
  2. Step 2: Convert to fraction form
    619,434.30/854,737.50 = 347,491.79/x
  3. Step 3: Cross multiply
    619,434.30x = 854,737.50 × 347,491.79
  4. Step 4: Simplify right side
    619,434.30x = 297,014,263,855.13
  5. Step 5: Solve for x
    x = 297,014,263,855.13/619,434.30
  6. Step 6: Final answer
    x = 479,492.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.