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Finding the Fourth Proportional to 120,791.99, 181,239.17 and 64,617.38

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Solution

The fourth proportional to 120,791.99, 181,239.17 and 64,617.38 is: 96,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,791.99 : 181,239.17 = 64,617.38 : x
  2. Step 2: Convert to fraction form
    120,791.99/181,239.17 = 64,617.38/x
  3. Step 3: Cross multiply
    120,791.99x = 181,239.17 × 64,617.38
  4. Step 4: Simplify right side
    120,791.99x = 11,711,199,089.49
  5. Step 5: Solve for x
    x = 11,711,199,089.49/120,791.99
  6. Step 6: Final answer
    x = 96,953.45

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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.