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Finding the Fourth Proportional to 22,384.33, 30,890.90 and 12,313.33

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Solution

The fourth proportional to 22,384.33, 30,890.90 and 12,313.33 is: 16,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,384.33 : 30,890.90 = 12,313.33 : x
  2. Step 2: Convert to fraction form
    22,384.33/30,890.90 = 12,313.33/x
  3. Step 3: Cross multiply
    22,384.33x = 30,890.90 × 12,313.33
  4. Step 4: Simplify right side
    22,384.33x = 380,369,845.70
  5. Step 5: Solve for x
    x = 380,369,845.70/22,384.33
  6. Step 6: Final answer
    x = 16,992.68

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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.