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Finding the Fourth Proportional to 325,671.62, 488,521.13 and 89,013.65

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Solution

The fourth proportional to 325,671.62, 488,521.13 and 89,013.65 is: 133,524.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,671.62 : 488,521.13 = 89,013.65 : x
  2. Step 2: Convert to fraction form
    325,671.62/488,521.13 = 89,013.65/x
  3. Step 3: Cross multiply
    325,671.62x = 488,521.13 × 89,013.65
  4. Step 4: Simplify right side
    325,671.62x = 43,485,045,995.75
  5. Step 5: Solve for x
    x = 43,485,045,995.75/325,671.62
  6. Step 6: Final answer
    x = 133,524.21

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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.