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Finding the Fourth Proportional to 264,394.12, 396,616.20 and 86,901.88

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Solution

The fourth proportional to 264,394.12, 396,616.20 and 86,901.88 is: 130,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,394.12 : 396,616.20 = 86,901.88 : x
  2. Step 2: Convert to fraction form
    264,394.12/396,616.20 = 86,901.88/x
  3. Step 3: Cross multiply
    264,394.12x = 396,616.20 × 86,901.88
  4. Step 4: Simplify right side
    264,394.12x = 34,466,693,418.46
  5. Step 5: Solve for x
    x = 34,466,693,418.46/264,394.12
  6. Step 6: Final answer
    x = 130,361.04

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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.