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Finding the Fourth Proportional to 264,398.13, 396,512.96 and 86,863.95

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Solution

The fourth proportional to 264,398.13, 396,512.96 and 86,863.95 is: 130,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,398.13 : 396,512.96 = 86,863.95 : x
  2. Step 2: Convert to fraction form
    264,398.13/396,512.96 = 86,863.95/x
  3. Step 3: Cross multiply
    264,398.13x = 396,512.96 × 86,863.95
  4. Step 4: Simplify right side
    264,398.13x = 34,442,681,497.47
  5. Step 5: Solve for x
    x = 34,442,681,497.47/264,398.13
  6. Step 6: Final answer
    x = 130,268.25

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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.