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Finding the Fourth Proportional to 18,631.32, 27,950.43 and 6,152.21

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Solution

The fourth proportional to 18,631.32, 27,950.43 and 6,152.21 is: 9,229.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.32 : 27,950.43 = 6,152.21 : x
  2. Step 2: Convert to fraction form
    18,631.32/27,950.43 = 6,152.21/x
  3. Step 3: Cross multiply
    18,631.32x = 27,950.43 × 6,152.21
  4. Step 4: Simplify right side
    18,631.32x = 171,956,914.95
  5. Step 5: Solve for x
    x = 171,956,914.95/18,631.32
  6. Step 6: Final answer
    x = 9,229.45

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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.