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Finding the Fourth Proportional to 158,552.61, 218,800.94 and 86,932.46

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Solution

The fourth proportional to 158,552.61, 218,800.94 and 86,932.46 is: 119,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,552.61 : 218,800.94 = 86,932.46 : x
  2. Step 2: Convert to fraction form
    158,552.61/218,800.94 = 86,932.46/x
  3. Step 3: Cross multiply
    158,552.61x = 218,800.94 × 86,932.46
  4. Step 4: Simplify right side
    158,552.61x = 19,020,902,435.85
  5. Step 5: Solve for x
    x = 19,020,902,435.85/158,552.61
  6. Step 6: Final answer
    x = 119,965.87

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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.