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Finding the Fourth Proportional to 185,078.80, 277,747.80 and 79,973.20

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Solution

The fourth proportional to 185,078.80, 277,747.80 and 79,973.20 is: 120,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,078.80 : 277,747.80 = 79,973.20 : x
  2. Step 2: Convert to fraction form
    185,078.80/277,747.80 = 79,973.20/x
  3. Step 3: Cross multiply
    185,078.80x = 277,747.80 × 79,973.20
  4. Step 4: Simplify right side
    185,078.80x = 22,212,380,358.96
  5. Step 5: Solve for x
    x = 22,212,380,358.96/185,078.80
  6. Step 6: Final answer
    x = 120,015.80

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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.