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Finding the Fourth Proportional to 53,915.20, 80,872.80 and 27,611.20

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Solution

The fourth proportional to 53,915.20, 80,872.80 and 27,611.20 is: 41,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,915.20 : 80,872.80 = 27,611.20 : x
  2. Step 2: Convert to fraction form
    53,915.20/80,872.80 = 27,611.20/x
  3. Step 3: Cross multiply
    53,915.20x = 80,872.80 × 27,611.20
  4. Step 4: Simplify right side
    53,915.20x = 2,232,995,055.36
  5. Step 5: Solve for x
    x = 2,232,995,055.36/53,915.20
  6. Step 6: Final answer
    x = 41,416.80

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1.5x scale

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.