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Finding the Fourth Proportional to 325,424.98, 488,184.99 and 100,805.50

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Solution

The fourth proportional to 325,424.98, 488,184.99 and 100,805.50 is: 151,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,424.98 : 488,184.99 = 100,805.50 : x
  2. Step 2: Convert to fraction form
    325,424.98/488,184.99 = 100,805.50/x
  3. Step 3: Cross multiply
    325,424.98x = 488,184.99 × 100,805.50
  4. Step 4: Simplify right side
    325,424.98x = 49,211,732,009.45
  5. Step 5: Solve for x
    x = 49,211,732,009.45/325,424.98
  6. Step 6: Final answer
    x = 151,222.97

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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.