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Finding the Fourth Proportional to 18,617.76, 27,927.36 and 4,766.76

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Solution

The fourth proportional to 18,617.76, 27,927.36 and 4,766.76 is: 7,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.76 : 27,927.36 = 4,766.76 : x
  2. Step 2: Convert to fraction form
    18,617.76/27,927.36 = 4,766.76/x
  3. Step 3: Cross multiply
    18,617.76x = 27,927.36 × 4,766.76
  4. Step 4: Simplify right side
    18,617.76x = 133,123,022.55
  5. Step 5: Solve for x
    x = 133,123,022.55/18,617.76
  6. Step 6: Final answer
    x = 7,150.32

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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.