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Finding the Fourth Proportional to 699,679.46, 965,548.98 and 393,756.41

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Solution

The fourth proportional to 699,679.46, 965,548.98 and 393,756.41 is: 543,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,679.46 : 965,548.98 = 393,756.41 : x
  2. Step 2: Convert to fraction form
    699,679.46/965,548.98 = 393,756.41/x
  3. Step 3: Cross multiply
    699,679.46x = 965,548.98 × 393,756.41
  4. Step 4: Simplify right side
    699,679.46x = 380,191,095,216.22
  5. Step 5: Solve for x
    x = 380,191,095,216.22/699,679.46
  6. Step 6: Final answer
    x = 543,378.96

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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.