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Finding the Fourth Proportional to 80,772.40, 121,043.40 and 59,546.80

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Solution

The fourth proportional to 80,772.40, 121,043.40 and 59,546.80 is: 89,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.40 : 121,043.40 = 59,546.80 : x
  2. Step 2: Convert to fraction form
    80,772.40/121,043.40 = 59,546.80/x
  3. Step 3: Cross multiply
    80,772.40x = 121,043.40 × 59,546.80
  4. Step 4: Simplify right side
    80,772.40x = 7,207,747,131.12
  5. Step 5: Solve for x
    x = 7,207,747,131.12/80,772.40
  6. Step 6: Final answer
    x = 89,235.27

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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.