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Finding the Fourth Proportional to 133,174.72, 199,865.36 and 99,525.30

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Solution

The fourth proportional to 133,174.72, 199,865.36 and 99,525.30 is: 149,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,174.72 : 199,865.36 = 99,525.30 : x
  2. Step 2: Convert to fraction form
    133,174.72/199,865.36 = 99,525.30/x
  3. Step 3: Cross multiply
    133,174.72x = 199,865.36 × 99,525.30
  4. Step 4: Simplify right side
    133,174.72x = 19,891,659,913.61
  5. Step 5: Solve for x
    x = 19,891,659,913.61/133,174.72
  6. Step 6: Final answer
    x = 149,365.13

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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.