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Finding the Fourth Proportional to 16,433.88, 22,678.75 and 8,981.88

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Solution

The fourth proportional to 16,433.88, 22,678.75 and 8,981.88 is: 12,394.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,433.88 : 22,678.75 = 8,981.88 : x
  2. Step 2: Convert to fraction form
    16,433.88/22,678.75 = 8,981.88/x
  3. Step 3: Cross multiply
    16,433.88x = 22,678.75 × 8,981.88
  4. Step 4: Simplify right side
    16,433.88x = 203,697,811.05
  5. Step 5: Solve for x
    x = 203,697,811.05/16,433.88
  6. Step 6: Final answer
    x = 12,394.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.