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Finding the Fourth Proportional to 699,327.41, 965,070.43 and 393,404.02

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Solution

The fourth proportional to 699,327.41, 965,070.43 and 393,404.02 is: 542,896.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,327.41 : 965,070.43 = 393,404.02 : x
  2. Step 2: Convert to fraction form
    699,327.41/965,070.43 = 393,404.02/x
  3. Step 3: Cross multiply
    699,327.41x = 965,070.43 × 393,404.02
  4. Step 4: Simplify right side
    699,327.41x = 379,662,583,348.94
  5. Step 5: Solve for x
    x = 379,662,583,348.94/699,327.41
  6. Step 6: Final answer
    x = 542,896.76

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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.