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Finding the Fourth Proportional to 297,840.80, 446,761.20 and 171,432.20

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Solution

The fourth proportional to 297,840.80, 446,761.20 and 171,432.20 is: 257,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,840.80 : 446,761.20 = 171,432.20 : x
  2. Step 2: Convert to fraction form
    297,840.80/446,761.20 = 171,432.20/x
  3. Step 3: Cross multiply
    297,840.80x = 446,761.20 × 171,432.20
  4. Step 4: Simplify right side
    297,840.80x = 76,589,255,390.64
  5. Step 5: Solve for x
    x = 76,589,255,390.64/297,840.80
  6. Step 6: Final answer
    x = 257,148.30

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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.