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Finding the Fourth Proportional to 449,843.60, 674,765.40 and 117,419.60

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Solution

The fourth proportional to 449,843.60, 674,765.40 and 117,419.60 is: 176,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,843.60 : 674,765.40 = 117,419.60 : x
  2. Step 2: Convert to fraction form
    449,843.60/674,765.40 = 117,419.60/x
  3. Step 3: Cross multiply
    449,843.60x = 674,765.40 × 117,419.60
  4. Step 4: Simplify right side
    449,843.60x = 79,230,683,361.84
  5. Step 5: Solve for x
    x = 79,230,683,361.84/449,843.60
  6. Step 6: Final answer
    x = 176,129.40

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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.