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Finding the Fourth Proportional to 215,919.33, 323,915.84 and 73,756.77

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Solution

The fourth proportional to 215,919.33, 323,915.84 and 73,756.77 is: 110,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,919.33 : 323,915.84 = 73,756.77 : x
  2. Step 2: Convert to fraction form
    215,919.33/323,915.84 = 73,756.77/x
  3. Step 3: Cross multiply
    215,919.33x = 323,915.84 × 73,756.77
  4. Step 4: Simplify right side
    215,919.33x = 23,890,986,110.24
  5. Step 5: Solve for x
    x = 23,890,986,110.24/215,919.33
  6. Step 6: Final answer
    x = 110,647.74

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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.