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Finding the Fourth Proportional to 17,640.60, 24,343.92 and 9,682.80

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Solution

The fourth proportional to 17,640.60, 24,343.92 and 9,682.80 is: 13,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.60 : 24,343.92 = 9,682.80 : x
  2. Step 2: Convert to fraction form
    17,640.60/24,343.92 = 9,682.80/x
  3. Step 3: Cross multiply
    17,640.60x = 24,343.92 × 9,682.80
  4. Step 4: Simplify right side
    17,640.60x = 235,717,308.58
  5. Step 5: Solve for x
    x = 235,717,308.58/17,640.60
  6. Step 6: Final answer
    x = 13,362.20

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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.