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Finding the Fourth Proportional to 18,447.61, 27,690.64 and 16,352.55

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Solution

The fourth proportional to 18,447.61, 27,690.64 and 16,352.55 is: 24,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.61 : 27,690.64 = 16,352.55 : x
  2. Step 2: Convert to fraction form
    18,447.61/27,690.64 = 16,352.55/x
  3. Step 3: Cross multiply
    18,447.61x = 27,690.64 × 16,352.55
  4. Step 4: Simplify right side
    18,447.61x = 452,812,575.13
  5. Step 5: Solve for x
    x = 452,812,575.13/18,447.61
  6. Step 6: Final answer
    x = 24,545.87

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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.