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Finding the Fourth Proportional to 36,475.53, 54,719.78 and 12,458.53

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Solution

The fourth proportional to 36,475.53, 54,719.78 and 12,458.53 is: 18,690.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,475.53 : 54,719.78 = 12,458.53 : x
  2. Step 2: Convert to fraction form
    36,475.53/54,719.78 = 12,458.53/x
  3. Step 3: Cross multiply
    36,475.53x = 54,719.78 × 12,458.53
  4. Step 4: Simplify right side
    36,475.53x = 681,728,020.72
  5. Step 5: Solve for x
    x = 681,728,020.72/36,475.53
  6. Step 6: Final answer
    x = 18,690.01

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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.