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Finding the Fourth Proportional to 469,493.80, 704,240.70 and 137,069.80

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Solution

The fourth proportional to 469,493.80, 704,240.70 and 137,069.80 is: 205,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,493.80 : 704,240.70 = 137,069.80 : x
  2. Step 2: Convert to fraction form
    469,493.80/704,240.70 = 137,069.80/x
  3. Step 3: Cross multiply
    469,493.80x = 704,240.70 × 137,069.80
  4. Step 4: Simplify right side
    469,493.80x = 96,530,131,900.86
  5. Step 5: Solve for x
    x = 96,530,131,900.86/469,493.80
  6. Step 6: Final answer
    x = 205,604.70

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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.