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Finding the Fourth Proportional to 922,431.60, 1,383,906.60 and 449,132.40

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Solution

The fourth proportional to 922,431.60, 1,383,906.60 and 449,132.40 is: 673,824.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,431.60 : 1,383,906.60 = 449,132.40 : x
  2. Step 2: Convert to fraction form
    922,431.60/1,383,906.60 = 449,132.40/x
  3. Step 3: Cross multiply
    922,431.60x = 1,383,906.60 × 449,132.40
  4. Step 4: Simplify right side
    922,431.60x = 621,557,292,633.84
  5. Step 5: Solve for x
    x = 621,557,292,633.84/922,431.60
  6. Step 6: Final answer
    x = 673,824.80

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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.