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Finding the Fourth Proportional to 118,235.84, 177,351.88 and 55,020.61

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Solution

The fourth proportional to 118,235.84, 177,351.88 and 55,020.61 is: 82,530.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,235.84 : 177,351.88 = 55,020.61 : x
  2. Step 2: Convert to fraction form
    118,235.84/177,351.88 = 55,020.61/x
  3. Step 3: Cross multiply
    118,235.84x = 177,351.88 × 55,020.61
  4. Step 4: Simplify right side
    118,235.84x = 9,758,008,622.25
  5. Step 5: Solve for x
    x = 9,758,008,622.25/118,235.84
  6. Step 6: Final answer
    x = 82,530.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.