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Finding the Fourth Proportional to 18,323.12, 27,484.70 and 4,472.12

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Solution

The fourth proportional to 18,323.12, 27,484.70 and 4,472.12 is: 6,708.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.12 : 27,484.70 = 4,472.12 : x
  2. Step 2: Convert to fraction form
    18,323.12/27,484.70 = 4,472.12/x
  3. Step 3: Cross multiply
    18,323.12x = 27,484.70 × 4,472.12
  4. Step 4: Simplify right side
    18,323.12x = 122,914,876.56
  5. Step 5: Solve for x
    x = 122,914,876.56/18,323.12
  6. Step 6: Final answer
    x = 6,708.18

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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.