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Finding the Fourth Proportional to 216,791.15, 299,164.14 and 119,995.19

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Solution

The fourth proportional to 216,791.15, 299,164.14 and 119,995.19 is: 165,589.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,791.15 : 299,164.14 = 119,995.19 : x
  2. Step 2: Convert to fraction form
    216,791.15/299,164.14 = 119,995.19/x
  3. Step 3: Cross multiply
    216,791.15x = 299,164.14 × 119,995.19
  4. Step 4: Simplify right side
    216,791.15x = 35,898,257,820.49
  5. Step 5: Solve for x
    x = 35,898,257,820.49/216,791.15
  6. Step 6: Final answer
    x = 165,589.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.