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Finding the Fourth Proportional to 73,778.40, 110,725.20 and 34,340.40

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Solution

The fourth proportional to 73,778.40, 110,725.20 and 34,340.40 is: 51,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,778.40 : 110,725.20 = 34,340.40 : x
  2. Step 2: Convert to fraction form
    73,778.40/110,725.20 = 34,340.40/x
  3. Step 3: Cross multiply
    73,778.40x = 110,725.20 × 34,340.40
  4. Step 4: Simplify right side
    73,778.40x = 3,802,347,658.08
  5. Step 5: Solve for x
    x = 3,802,347,658.08/73,778.40
  6. Step 6: Final answer
    x = 51,537.41

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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.