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Finding the Fourth Proportional to 12,200.48, 16,836.76 and 6,611.48

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Solution

The fourth proportional to 12,200.48, 16,836.76 and 6,611.48 is: 9,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.48 : 16,836.76 = 6,611.48 : x
  2. Step 2: Convert to fraction form
    12,200.48/16,836.76 = 6,611.48/x
  3. Step 3: Cross multiply
    12,200.48x = 16,836.76 × 6,611.48
  4. Step 4: Simplify right side
    12,200.48x = 111,315,902.00
  5. Step 5: Solve for x
    x = 111,315,902.00/12,200.48
  6. Step 6: Final answer
    x = 9,123.90

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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.