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Finding the Fourth Proportional to 325,561.44, 488,417.90 and 100,909.96

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Solution

The fourth proportional to 325,561.44, 488,417.90 and 100,909.96 is: 151,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,561.44 : 488,417.90 = 100,909.96 : x
  2. Step 2: Convert to fraction form
    325,561.44/488,417.90 = 100,909.96/x
  3. Step 3: Cross multiply
    325,561.44x = 488,417.90 × 100,909.96
  4. Step 4: Simplify right side
    325,561.44x = 49,286,230,752.28
  5. Step 5: Solve for x
    x = 49,286,230,752.28/325,561.44
  6. Step 6: Final answer
    x = 151,388.42

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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.