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Finding the Fourth Proportional to 22,443.62, 30,960.62 and 13,487.80

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Solution

The fourth proportional to 22,443.62, 30,960.62 and 13,487.80 is: 18,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,443.62 : 30,960.62 = 13,487.80 : x
  2. Step 2: Convert to fraction form
    22,443.62/30,960.62 = 13,487.80/x
  3. Step 3: Cross multiply
    22,443.62x = 30,960.62 × 13,487.80
  4. Step 4: Simplify right side
    22,443.62x = 417,590,650.44
  5. Step 5: Solve for x
    x = 417,590,650.44/22,443.62
  6. Step 6: Final answer
    x = 18,606.21

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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.