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Finding the Fourth Proportional to 199,207.91, 274,898.89 and 108,561.93

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Solution

The fourth proportional to 199,207.91, 274,898.89 and 108,561.93 is: 149,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,207.91 : 274,898.89 = 108,561.93 : x
  2. Step 2: Convert to fraction form
    199,207.91/274,898.89 = 108,561.93/x
  3. Step 3: Cross multiply
    199,207.91x = 274,898.89 × 108,561.93
  4. Step 4: Simplify right side
    199,207.91x = 29,843,553,158.09
  5. Step 5: Solve for x
    x = 29,843,553,158.09/199,207.91
  6. Step 6: Final answer
    x = 149,811.08

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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.