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Finding the Fourth Proportional to 38,406.87, 57,814.11 and 27,389.79

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Solution

The fourth proportional to 38,406.87, 57,814.11 and 27,389.79 is: 41,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,406.87 : 57,814.11 = 27,389.79 : x
  2. Step 2: Convert to fraction form
    38,406.87/57,814.11 = 27,389.79/x
  3. Step 3: Cross multiply
    38,406.87x = 57,814.11 × 27,389.79
  4. Step 4: Simplify right side
    38,406.87x = 1,583,516,331.94
  5. Step 5: Solve for x
    x = 1,583,516,331.94/38,406.87
  6. Step 6: Final answer
    x = 41,230.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.