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Finding the Fourth Proportional to 55,915.20, 83,872.80 and 22,651.20

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Solution

The fourth proportional to 55,915.20, 83,872.80 and 22,651.20 is: 33,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.20 : 83,872.80 = 22,651.20 : x
  2. Step 2: Convert to fraction form
    55,915.20/83,872.80 = 22,651.20/x
  3. Step 3: Cross multiply
    55,915.20x = 83,872.80 × 22,651.20
  4. Step 4: Simplify right side
    55,915.20x = 1,899,819,567.36
  5. Step 5: Solve for x
    x = 1,899,819,567.36/55,915.20
  6. Step 6: Final answer
    x = 33,976.80

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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.