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Finding the Fourth Proportional to 17,691.72, 26,490.15 and 9,354.42

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Solution

The fourth proportional to 17,691.72, 26,490.15 and 9,354.42 is: 14,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,691.72 : 26,490.15 = 9,354.42 : x
  2. Step 2: Convert to fraction form
    17,691.72/26,490.15 = 9,354.42/x
  3. Step 3: Cross multiply
    17,691.72x = 26,490.15 × 9,354.42
  4. Step 4: Simplify right side
    17,691.72x = 247,799,988.96
  5. Step 5: Solve for x
    x = 247,799,988.96/17,691.72
  6. Step 6: Final answer
    x = 14,006.55

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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.