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Finding the Fourth Proportional to 22,285.70, 33,406.04 and 13,971.55

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Solution

The fourth proportional to 22,285.70, 33,406.04 and 13,971.55 is: 20,943.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,285.70 : 33,406.04 = 13,971.55 : x
  2. Step 2: Convert to fraction form
    22,285.70/33,406.04 = 13,971.55/x
  3. Step 3: Cross multiply
    22,285.70x = 33,406.04 × 13,971.55
  4. Step 4: Simplify right side
    22,285.70x = 466,734,158.16
  5. Step 5: Solve for x
    x = 466,734,158.16/22,285.70
  6. Step 6: Final answer
    x = 20,943.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.