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Finding the Fourth Proportional to 179,791.02, 248,109.42 and 99,216.78

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Solution

The fourth proportional to 179,791.02, 248,109.42 and 99,216.78 is: 136,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,791.02 : 248,109.42 = 99,216.78 : x
  2. Step 2: Convert to fraction form
    179,791.02/248,109.42 = 99,216.78/x
  3. Step 3: Cross multiply
    179,791.02x = 248,109.42 × 99,216.78
  4. Step 4: Simplify right side
    179,791.02x = 24,616,617,740.07
  5. Step 5: Solve for x
    x = 24,616,617,740.07/179,791.02
  6. Step 6: Final answer
    x = 136,917.95

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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.