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Finding the Fourth Proportional to 87,190.83, 119,537.17 and 85,616.19

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Solution

The fourth proportional to 87,190.83, 119,537.17 and 85,616.19 is: 117,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,190.83 : 119,537.17 = 85,616.19 : x
  2. Step 2: Convert to fraction form
    87,190.83/119,537.17 = 85,616.19/x
  3. Step 3: Cross multiply
    87,190.83x = 119,537.17 × 85,616.19
  4. Step 4: Simplify right side
    87,190.83x = 10,234,316,844.74
  5. Step 5: Solve for x
    x = 10,234,316,844.74/87,190.83
  6. Step 6: Final answer
    x = 117,378.36

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.