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Finding the Fourth Proportional to 122,296.80, 168,769.53 and 71,311.77

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Solution

The fourth proportional to 122,296.80, 168,769.53 and 71,311.77 is: 98,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,296.80 : 168,769.53 = 71,311.77 : x
  2. Step 2: Convert to fraction form
    122,296.80/168,769.53 = 71,311.77/x
  3. Step 3: Cross multiply
    122,296.80x = 168,769.53 × 71,311.77
  4. Step 4: Simplify right side
    122,296.80x = 12,035,253,906.37
  5. Step 5: Solve for x
    x = 12,035,253,906.37/122,296.80
  6. Step 6: Final answer
    x = 98,410.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.