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Finding the Fourth Proportional to 221,462.40, 332,339.40 and 126,692.40

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Solution

The fourth proportional to 221,462.40, 332,339.40 and 126,692.40 is: 190,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,462.40 : 332,339.40 = 126,692.40 : x
  2. Step 2: Convert to fraction form
    221,462.40/332,339.40 = 126,692.40/x
  3. Step 3: Cross multiply
    221,462.40x = 332,339.40 × 126,692.40
  4. Step 4: Simplify right side
    221,462.40x = 42,104,876,200.56
  5. Step 5: Solve for x
    x = 42,104,876,200.56/221,462.40
  6. Step 6: Final answer
    x = 190,122.01

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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.