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Finding the Fourth Proportional to 19,608.20, 29,373.90 and 11,793.80

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Solution

The fourth proportional to 19,608.20, 29,373.90 and 11,793.80 is: 17,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.20 : 29,373.90 = 11,793.80 : x
  2. Step 2: Convert to fraction form
    19,608.20/29,373.90 = 11,793.80/x
  3. Step 3: Cross multiply
    19,608.20x = 29,373.90 × 11,793.80
  4. Step 4: Simplify right side
    19,608.20x = 346,429,901.82
  5. Step 5: Solve for x
    x = 346,429,901.82/19,608.20
  6. Step 6: Final answer
    x = 17,667.60

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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.