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Finding the Fourth Proportional to 324,557.52, 486,882.72 and 99,936.96

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Solution

The fourth proportional to 324,557.52, 486,882.72 and 99,936.96 is: 149,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,557.52 : 486,882.72 = 99,936.96 : x
  2. Step 2: Convert to fraction form
    324,557.52/486,882.72 = 99,936.96/x
  3. Step 3: Cross multiply
    324,557.52x = 486,882.72 × 99,936.96
  4. Step 4: Simplify right side
    324,557.52x = 48,657,578,913.33
  5. Step 5: Solve for x
    x = 48,657,578,913.33/324,557.52
  6. Step 6: Final answer
    x = 149,919.74

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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.