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Finding the Fourth Proportional to 108,540.99, 149,805.11 and 63,245.83

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Solution

The fourth proportional to 108,540.99, 149,805.11 and 63,245.83 is: 87,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.99 : 149,805.11 = 63,245.83 : x
  2. Step 2: Convert to fraction form
    108,540.99/149,805.11 = 63,245.83/x
  3. Step 3: Cross multiply
    108,540.99x = 149,805.11 × 63,245.83
  4. Step 4: Simplify right side
    108,540.99x = 9,474,547,771.17
  5. Step 5: Solve for x
    x = 9,474,547,771.17/108,540.99
  6. Step 6: Final answer
    x = 87,290.04

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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.