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Finding the Fourth Proportional to 108,992.10, 150,412.91 and 61,244.49

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Solution

The fourth proportional to 108,992.10, 150,412.91 and 61,244.49 is: 84,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,992.10 : 150,412.91 = 61,244.49 : x
  2. Step 2: Convert to fraction form
    108,992.10/150,412.91 = 61,244.49/x
  3. Step 3: Cross multiply
    108,992.10x = 150,412.91 × 61,244.49
  4. Step 4: Simplify right side
    108,992.10x = 9,211,961,656.14
  5. Step 5: Solve for x
    x = 9,211,961,656.14/108,992.10
  6. Step 6: Final answer
    x = 84,519.54

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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.