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Finding the Fourth Proportional to 99,161.63, 136,842.61 and 53,839.24

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Solution

The fourth proportional to 99,161.63, 136,842.61 and 53,839.24 is: 74,297.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,161.63 : 136,842.61 = 53,839.24 : x
  2. Step 2: Convert to fraction form
    99,161.63/136,842.61 = 53,839.24/x
  3. Step 3: Cross multiply
    99,161.63x = 136,842.61 × 53,839.24
  4. Step 4: Simplify right side
    99,161.63x = 7,367,502,122.02
  5. Step 5: Solve for x
    x = 7,367,502,122.02/99,161.63
  6. Step 6: Final answer
    x = 74,297.91

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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.