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Finding the Fourth Proportional to 325,645.30, 488,537.61 and 101,000.80

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Solution

The fourth proportional to 325,645.30, 488,537.61 and 101,000.80 is: 151,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,645.30 : 488,537.61 = 101,000.80 : x
  2. Step 2: Convert to fraction form
    325,645.30/488,537.61 = 101,000.80/x
  3. Step 3: Cross multiply
    325,645.30x = 488,537.61 × 101,000.80
  4. Step 4: Simplify right side
    325,645.30x = 49,342,689,440.09
  5. Step 5: Solve for x
    x = 49,342,689,440.09/325,645.30
  6. Step 6: Final answer
    x = 151,522.81

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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.