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Finding the Fourth Proportional to 11,403.92, 17,108.04 and 3,613.88

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Solution

The fourth proportional to 11,403.92, 17,108.04 and 3,613.88 is: 5,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.92 : 17,108.04 = 3,613.88 : x
  2. Step 2: Convert to fraction form
    11,403.92/17,108.04 = 3,613.88/x
  3. Step 3: Cross multiply
    11,403.92x = 17,108.04 × 3,613.88
  4. Step 4: Simplify right side
    11,403.92x = 61,826,403.60
  5. Step 5: Solve for x
    x = 61,826,403.60/11,403.92
  6. Step 6: Final answer
    x = 5,421.50

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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.