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Finding the Fourth Proportional to 11,695.88, 17,612.66 and 8,431.94

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Solution

The fourth proportional to 11,695.88, 17,612.66 and 8,431.94 is: 12,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.88 : 17,612.66 = 8,431.94 : x
  2. Step 2: Convert to fraction form
    11,695.88/17,612.66 = 8,431.94/x
  3. Step 3: Cross multiply
    11,695.88x = 17,612.66 × 8,431.94
  4. Step 4: Simplify right side
    11,695.88x = 148,508,892.36
  5. Step 5: Solve for x
    x = 148,508,892.36/11,695.88
  6. Step 6: Final answer
    x = 12,697.54

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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.