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Finding the Fourth Proportional to 17,613.60, 26,421.60 and 5,604.80

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Solution

The fourth proportional to 17,613.60, 26,421.60 and 5,604.80 is: 8,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,613.60 : 26,421.60 = 5,604.80 : x
  2. Step 2: Convert to fraction form
    17,613.60/26,421.60 = 5,604.80/x
  3. Step 3: Cross multiply
    17,613.60x = 26,421.60 × 5,604.80
  4. Step 4: Simplify right side
    17,613.60x = 148,087,783.68
  5. Step 5: Solve for x
    x = 148,087,783.68/17,613.60
  6. Step 6: Final answer
    x = 8,407.58

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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.