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Finding the Fourth Proportional to 264,033.60, 395,953.20 and 86,546.40

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Solution

The fourth proportional to 264,033.60, 395,953.20 and 86,546.40 is: 129,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,033.60 : 395,953.20 = 86,546.40 : x
  2. Step 2: Convert to fraction form
    264,033.60/395,953.20 = 86,546.40/x
  3. Step 3: Cross multiply
    264,033.60x = 395,953.20 × 86,546.40
  4. Step 4: Simplify right side
    264,033.60x = 34,268,324,028.48
  5. Step 5: Solve for x
    x = 34,268,324,028.48/264,033.60
  6. Step 6: Final answer
    x = 129,787.74

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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.