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Finding the Fourth Proportional to 356,780.75, 535,112.78 and 132,088.37

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Solution

The fourth proportional to 356,780.75, 535,112.78 and 132,088.37 is: 198,110.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,780.75 : 535,112.78 = 132,088.37 : x
  2. Step 2: Convert to fraction form
    356,780.75/535,112.78 = 132,088.37/x
  3. Step 3: Cross multiply
    356,780.75x = 535,112.78 × 132,088.37
  4. Step 4: Simplify right side
    356,780.75x = 70,682,171,540.36
  5. Step 5: Solve for x
    x = 70,682,171,540.36/356,780.75
  6. Step 6: Final answer
    x = 198,110.95

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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.