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Finding the Fourth Proportional to 11,691.05, 17,615.49 and 9,656.64

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Solution

The fourth proportional to 11,691.05, 17,615.49 and 9,656.64 is: 14,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.05 : 17,615.49 = 9,656.64 : x
  2. Step 2: Convert to fraction form
    11,691.05/17,615.49 = 9,656.64/x
  3. Step 3: Cross multiply
    11,691.05x = 17,615.49 × 9,656.64
  4. Step 4: Simplify right side
    11,691.05x = 170,106,445.35
  5. Step 5: Solve for x
    x = 170,106,445.35/11,691.05
  6. Step 6: Final answer
    x = 14,550.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.