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Finding the Fourth Proportional to 220,487.95, 330,778.91 and 125,763.31

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Solution

The fourth proportional to 220,487.95, 330,778.91 and 125,763.31 is: 188,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,487.95 : 330,778.91 = 125,763.31 : x
  2. Step 2: Convert to fraction form
    220,487.95/330,778.91 = 125,763.31/x
  3. Step 3: Cross multiply
    220,487.95x = 330,778.91 × 125,763.31
  4. Step 4: Simplify right side
    220,487.95x = 41,599,850,599.79
  5. Step 5: Solve for x
    x = 41,599,850,599.79/220,487.95
  6. Step 6: Final answer
    x = 188,671.76

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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.