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Finding the Fourth Proportional to 21,691.46, 32,545.29 and 8,552.99

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Solution

The fourth proportional to 21,691.46, 32,545.29 and 8,552.99 is: 12,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.46 : 32,545.29 = 8,552.99 : x
  2. Step 2: Convert to fraction form
    21,691.46/32,545.29 = 8,552.99/x
  3. Step 3: Cross multiply
    21,691.46x = 32,545.29 × 8,552.99
  4. Step 4: Simplify right side
    21,691.46x = 278,359,653.35
  5. Step 5: Solve for x
    x = 278,359,653.35/21,691.46
  6. Step 6: Final answer
    x = 12,832.68

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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.