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Finding the Fourth Proportional to 99,232.91, 136,940.74 and 53,910.57

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Solution

The fourth proportional to 99,232.91, 136,940.74 and 53,910.57 is: 74,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,232.91 : 136,940.74 = 53,910.57 : x
  2. Step 2: Convert to fraction form
    99,232.91/136,940.74 = 53,910.57/x
  3. Step 3: Cross multiply
    99,232.91x = 136,940.74 × 53,910.57
  4. Step 4: Simplify right side
    99,232.91x = 7,382,553,349.62
  5. Step 5: Solve for x
    x = 7,382,553,349.62/99,232.91
  6. Step 6: Final answer
    x = 74,396.22

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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.