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Finding the Fourth Proportional to 264,387.14, 396,580.70 and 77,398.64

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Solution

The fourth proportional to 264,387.14, 396,580.70 and 77,398.64 is: 116,097.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,387.14 : 396,580.70 = 77,398.64 : x
  2. Step 2: Convert to fraction form
    264,387.14/396,580.70 = 77,398.64/x
  3. Step 3: Cross multiply
    264,387.14x = 396,580.70 × 77,398.64
  4. Step 4: Simplify right side
    264,387.14x = 30,694,806,830.25
  5. Step 5: Solve for x
    x = 30,694,806,830.25/264,387.14
  6. Step 6: Final answer
    x = 116,097.96

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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.