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Finding the Fourth Proportional to 18,863.11, 28,294.67 and 7,184.53

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Solution

The fourth proportional to 18,863.11, 28,294.67 and 7,184.53 is: 10,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.11 : 28,294.67 = 7,184.53 : x
  2. Step 2: Convert to fraction form
    18,863.11/28,294.67 = 7,184.53/x
  3. Step 3: Cross multiply
    18,863.11x = 28,294.67 × 7,184.53
  4. Step 4: Simplify right side
    18,863.11x = 203,283,905.46
  5. Step 5: Solve for x
    x = 203,283,905.46/18,863.11
  6. Step 6: Final answer
    x = 10,776.80

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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.