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Finding the Fourth Proportional to 158,490.68, 218,786.82 and 110,930.72

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Solution

The fourth proportional to 158,490.68, 218,786.82 and 110,930.72 is: 153,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,490.68 : 218,786.82 = 110,930.72 : x
  2. Step 2: Convert to fraction form
    158,490.68/218,786.82 = 110,930.72/x
  3. Step 3: Cross multiply
    158,490.68x = 218,786.82 × 110,930.72
  4. Step 4: Simplify right side
    158,490.68x = 24,270,179,469.11
  5. Step 5: Solve for x
    x = 24,270,179,469.11/158,490.68
  6. Step 6: Final answer
    x = 153,133.17

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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.