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Finding the Fourth Proportional to 22,370.99, 30,872.14 and 12,299.14

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Solution

The fourth proportional to 22,370.99, 30,872.14 and 12,299.14 is: 16,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,370.99 : 30,872.14 = 12,299.14 : x
  2. Step 2: Convert to fraction form
    22,370.99/30,872.14 = 12,299.14/x
  3. Step 3: Cross multiply
    22,370.99x = 30,872.14 × 12,299.14
  4. Step 4: Simplify right side
    22,370.99x = 379,700,779.80
  5. Step 5: Solve for x
    x = 379,700,779.80/22,370.99
  6. Step 6: Final answer
    x = 16,972.91

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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.