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Finding the Fourth Proportional to 415,441.20, 573,305.94 and 245,671.68

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Solution

The fourth proportional to 415,441.20, 573,305.94 and 245,671.68 is: 339,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,441.20 : 573,305.94 = 245,671.68 : x
  2. Step 2: Convert to fraction form
    415,441.20/573,305.94 = 245,671.68/x
  3. Step 3: Cross multiply
    415,441.20x = 573,305.94 × 245,671.68
  4. Step 4: Simplify right side
    415,441.20x = 140,845,033,433.78
  5. Step 5: Solve for x
    x = 140,845,033,433.78/415,441.20
  6. Step 6: Final answer
    x = 339,025.19

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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.