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Finding the Fourth Proportional to 567,086.42, 782,579.33 and 312,435.38

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Solution

The fourth proportional to 567,086.42, 782,579.33 and 312,435.38 is: 431,160.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,086.42 : 782,579.33 = 312,435.38 : x
  2. Step 2: Convert to fraction form
    567,086.42/782,579.33 = 312,435.38/x
  3. Step 3: Cross multiply
    567,086.42x = 782,579.33 × 312,435.38
  4. Step 4: Simplify right side
    567,086.42x = 244,505,464,873.62
  5. Step 5: Solve for x
    x = 244,505,464,873.62/567,086.42
  6. Step 6: Final answer
    x = 431,160.86

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1.5x scale

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.