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Finding the Fourth Proportional to 53,787.60, 80,584.20 and 47,566.80

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Solution

The fourth proportional to 53,787.60, 80,584.20 and 47,566.80 is: 71,264.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,787.60 : 80,584.20 = 47,566.80 : x
  2. Step 2: Convert to fraction form
    53,787.60/80,584.20 = 47,566.80/x
  3. Step 3: Cross multiply
    53,787.60x = 80,584.20 × 47,566.80
  4. Step 4: Simplify right side
    53,787.60x = 3,833,132,524.56
  5. Step 5: Solve for x
    x = 3,833,132,524.56/53,787.60
  6. Step 6: Final answer
    x = 71,264.24

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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.