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Finding the Fourth Proportional to 122,553.20, 183,829.80 and 80,562.80

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Solution

The fourth proportional to 122,553.20, 183,829.80 and 80,562.80 is: 120,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,553.20 : 183,829.80 = 80,562.80 : x
  2. Step 2: Convert to fraction form
    122,553.20/183,829.80 = 80,562.80/x
  3. Step 3: Cross multiply
    122,553.20x = 183,829.80 × 80,562.80
  4. Step 4: Simplify right side
    122,553.20x = 14,809,843,411.44
  5. Step 5: Solve for x
    x = 14,809,843,411.44/122,553.20
  6. Step 6: Final answer
    x = 120,844.20

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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.