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Finding the Fourth Proportional to 324,174.50, 486,334.05 and 99,557.61

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Solution

The fourth proportional to 324,174.50, 486,334.05 and 99,557.61 is: 149,358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,174.50 : 486,334.05 = 99,557.61 : x
  2. Step 2: Convert to fraction form
    324,174.50/486,334.05 = 99,557.61/x
  3. Step 3: Cross multiply
    324,174.50x = 486,334.05 × 99,557.61
  4. Step 4: Simplify right side
    324,174.50x = 48,418,253,762.53
  5. Step 5: Solve for x
    x = 48,418,253,762.53/324,174.50
  6. Step 6: Final answer
    x = 149,358.61

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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.