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Finding the Fourth Proportional to 449,761.83, 674,759.59 and 134,218.74

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Solution

The fourth proportional to 449,761.83, 674,759.59 and 134,218.74 is: 201,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,761.83 : 674,759.59 = 134,218.74 : x
  2. Step 2: Convert to fraction form
    449,761.83/674,759.59 = 134,218.74/x
  3. Step 3: Cross multiply
    449,761.83x = 674,759.59 × 134,218.74
  4. Step 4: Simplify right side
    449,761.83x = 90,565,381,972.72
  5. Step 5: Solve for x
    x = 90,565,381,972.72/449,761.83
  6. Step 6: Final answer
    x = 201,362.98

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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.