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Finding the Fourth Proportional to 22,218.63, 30,661.73 and 12,282.63

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Solution

The fourth proportional to 22,218.63, 30,661.73 and 12,282.63 is: 16,950.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.63 : 30,661.73 = 12,282.63 : x
  2. Step 2: Convert to fraction form
    22,218.63/30,661.73 = 12,282.63/x
  3. Step 3: Cross multiply
    22,218.63x = 30,661.73 × 12,282.63
  4. Step 4: Simplify right side
    22,218.63x = 376,606,684.75
  5. Step 5: Solve for x
    x = 376,606,684.75/22,218.63
  6. Step 6: Final answer
    x = 16,950.04

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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.