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Finding the Fourth Proportional to 576,086.12, 794,938.55 and 317,958.30

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Solution

The fourth proportional to 576,086.12, 794,938.55 and 317,958.30 is: 438,749.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,086.12 : 794,938.55 = 317,958.30 : x
  2. Step 2: Convert to fraction form
    576,086.12/794,938.55 = 317,958.30/x
  3. Step 3: Cross multiply
    576,086.12x = 794,938.55 × 317,958.30
  4. Step 4: Simplify right side
    576,086.12x = 252,757,308,372.67
  5. Step 5: Solve for x
    x = 252,757,308,372.67/576,086.12
  6. Step 6: Final answer
    x = 438,749.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.