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Finding the Fourth Proportional to 19,609.20, 29,346.60 and 11,823.60

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Solution

The fourth proportional to 19,609.20, 29,346.60 and 11,823.60 is: 17,694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,609.20 : 29,346.60 = 11,823.60 : x
  2. Step 2: Convert to fraction form
    19,609.20/29,346.60 = 11,823.60/x
  3. Step 3: Cross multiply
    19,609.20x = 29,346.60 × 11,823.60
  4. Step 4: Simplify right side
    19,609.20x = 346,982,459.76
  5. Step 5: Solve for x
    x = 346,982,459.76/19,609.20
  6. Step 6: Final answer
    x = 17,694.88

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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.