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Finding the Fourth Proportional to 8,471.12, 11,687.49 and 4,933.67

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Solution

The fourth proportional to 8,471.12, 11,687.49 and 4,933.67 is: 6,806.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.12 : 11,687.49 = 4,933.67 : x
  2. Step 2: Convert to fraction form
    8,471.12/11,687.49 = 4,933.67/x
  3. Step 3: Cross multiply
    8,471.12x = 11,687.49 × 4,933.67
  4. Step 4: Simplify right side
    8,471.12x = 57,662,160.35
  5. Step 5: Solve for x
    x = 57,662,160.35/8,471.12
  6. Step 6: Final answer
    x = 6,806.92

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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.