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Finding the Fourth Proportional to 325,590.15, 488,221.20 and 192,511.20

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Solution

The fourth proportional to 325,590.15, 488,221.20 and 192,511.20 is: 288,669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,590.15 : 488,221.20 = 192,511.20 : x
  2. Step 2: Convert to fraction form
    325,590.15/488,221.20 = 192,511.20/x
  3. Step 3: Cross multiply
    325,590.15x = 488,221.20 × 192,511.20
  4. Step 4: Simplify right side
    325,590.15x = 93,988,049,077.44
  5. Step 5: Solve for x
    x = 93,988,049,077.44/325,590.15
  6. Step 6: Final answer
    x = 288,669.82

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1.5x scale

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.