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Finding the Fourth Proportional to 264,451.97, 396,690.71 and 86,955.05

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Solution

The fourth proportional to 264,451.97, 396,690.71 and 86,955.05 is: 130,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,451.97 : 396,690.71 = 86,955.05 : x
  2. Step 2: Convert to fraction form
    264,451.97/396,690.71 = 86,955.05/x
  3. Step 3: Cross multiply
    264,451.97x = 396,690.71 × 86,955.05
  4. Step 4: Simplify right side
    264,451.97x = 34,494,258,104.36
  5. Step 5: Solve for x
    x = 34,494,258,104.36/264,451.97
  6. Step 6: Final answer
    x = 130,436.76

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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.