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Finding the Fourth Proportional to 163,351.16, 225,424.62 and 91,731.22

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Solution

The fourth proportional to 163,351.16, 225,424.62 and 91,731.22 is: 126,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,351.16 : 225,424.62 = 91,731.22 : x
  2. Step 2: Convert to fraction form
    163,351.16/225,424.62 = 91,731.22/x
  3. Step 3: Cross multiply
    163,351.16x = 225,424.62 × 91,731.22
  4. Step 4: Simplify right side
    163,351.16x = 20,678,475,410.64
  5. Step 5: Solve for x
    x = 20,678,475,410.64/163,351.16
  6. Step 6: Final answer
    x = 126,589.09

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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.