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Finding the Fourth Proportional to 365,990.34, 548,923.24 and 99,688.59

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Solution

The fourth proportional to 365,990.34, 548,923.24 and 99,688.59 is: 149,515.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,990.34 : 548,923.24 = 99,688.59 : x
  2. Step 2: Convert to fraction form
    365,990.34/548,923.24 = 99,688.59/x
  3. Step 3: Cross multiply
    365,990.34x = 548,923.24 × 99,688.59
  4. Step 4: Simplify right side
    365,990.34x = 54,721,383,564.61
  5. Step 5: Solve for x
    x = 54,721,383,564.61/365,990.34
  6. Step 6: Final answer
    x = 149,515.92

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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.