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Finding the Fourth Proportional to 14,574.70, 21,872.70 and 5,812.12

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Solution

The fourth proportional to 14,574.70, 21,872.70 and 5,812.12 is: 8,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,574.70 : 21,872.70 = 5,812.12 : x
  2. Step 2: Convert to fraction form
    14,574.70/21,872.70 = 5,812.12/x
  3. Step 3: Cross multiply
    14,574.70x = 21,872.70 × 5,812.12
  4. Step 4: Simplify right side
    14,574.70x = 127,126,757.12
  5. Step 5: Solve for x
    x = 127,126,757.12/14,574.70
  6. Step 6: Final answer
    x = 8,722.43

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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.