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Finding the Fourth Proportional to 99,233.51, 136,942.90 and 53,911.48

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Solution

The fourth proportional to 99,233.51, 136,942.90 and 53,911.48 is: 74,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,233.51 : 136,942.90 = 53,911.48 : x
  2. Step 2: Convert to fraction form
    99,233.51/136,942.90 = 53,911.48/x
  3. Step 3: Cross multiply
    99,233.51x = 136,942.90 × 53,911.48
  4. Step 4: Simplify right side
    99,233.51x = 7,382,794,951.48
  5. Step 5: Solve for x
    x = 7,382,794,951.48/99,233.51
  6. Step 6: Final answer
    x = 74,398.20

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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.