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Finding the Fourth Proportional to 99,272.36, 136,995.39 and 53,949.48

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Solution

The fourth proportional to 99,272.36, 136,995.39 and 53,949.48 is: 74,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,272.36 : 136,995.39 = 53,949.48 : x
  2. Step 2: Convert to fraction form
    99,272.36/136,995.39 = 53,949.48/x
  3. Step 3: Cross multiply
    99,272.36x = 136,995.39 × 53,949.48
  4. Step 4: Simplify right side
    99,272.36x = 7,390,830,052.90
  5. Step 5: Solve for x
    x = 7,390,830,052.90/99,272.36
  6. Step 6: Final answer
    x = 74,450.03

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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.