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Finding the Fourth Proportional to 699,352.53, 965,104.98 and 393,429.11

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Solution

The fourth proportional to 699,352.53, 965,104.98 and 393,429.11 is: 542,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,352.53 : 965,104.98 = 393,429.11 : x
  2. Step 2: Convert to fraction form
    699,352.53/965,104.98 = 393,429.11/x
  3. Step 3: Cross multiply
    699,352.53x = 965,104.98 × 393,429.11
  4. Step 4: Simplify right side
    699,352.53x = 379,700,388,512.44
  5. Step 5: Solve for x
    x = 379,700,388,512.44/699,352.53
  6. Step 6: Final answer
    x = 542,931.31

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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.