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Finding the Fourth Proportional to 496,622.40, 744,415.20 and 271,636.80

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Solution

The fourth proportional to 496,622.40, 744,415.20 and 271,636.80 is: 407,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,622.40 : 744,415.20 = 271,636.80 : x
  2. Step 2: Convert to fraction form
    496,622.40/744,415.20 = 271,636.80/x
  3. Step 3: Cross multiply
    496,622.40x = 744,415.20 × 271,636.80
  4. Step 4: Simplify right side
    496,622.40x = 202,210,562,799.36
  5. Step 5: Solve for x
    x = 202,210,562,799.36/496,622.40
  6. Step 6: Final answer
    x = 407,171.65

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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.