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Finding the Fourth Proportional to 325,394.10, 488,046.15 and 100,908.90

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Solution

The fourth proportional to 325,394.10, 488,046.15 and 100,908.90 is: 151,349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,394.10 : 488,046.15 = 100,908.90 : x
  2. Step 2: Convert to fraction form
    325,394.10/488,046.15 = 100,908.90/x
  3. Step 3: Cross multiply
    325,394.10x = 488,046.15 × 100,908.90
  4. Step 4: Simplify right side
    325,394.10x = 49,248,200,145.74
  5. Step 5: Solve for x
    x = 49,248,200,145.74/325,394.10
  6. Step 6: Final answer
    x = 151,349.39

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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.