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Finding the Fourth Proportional to 185,109.66, 277,775.51 and 79,928.55

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Solution

The fourth proportional to 185,109.66, 277,775.51 and 79,928.55 is: 119,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,109.66 : 277,775.51 = 79,928.55 : x
  2. Step 2: Convert to fraction form
    185,109.66/277,775.51 = 79,928.55/x
  3. Step 3: Cross multiply
    185,109.66x = 277,775.51 × 79,928.55
  4. Step 4: Simplify right side
    185,109.66x = 22,202,193,340.17
  5. Step 5: Solve for x
    x = 22,202,193,340.17/185,109.66
  6. Step 6: Final answer
    x = 119,940.76

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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.