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Finding the Fourth Proportional to 45,813.51, 68,724.36 and 12,533.75

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Solution

The fourth proportional to 45,813.51, 68,724.36 and 12,533.75 is: 18,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,813.51 : 68,724.36 = 12,533.75 : x
  2. Step 2: Convert to fraction form
    45,813.51/68,724.36 = 12,533.75/x
  3. Step 3: Cross multiply
    45,813.51x = 68,724.36 × 12,533.75
  4. Step 4: Simplify right side
    45,813.51x = 861,373,540.86
  5. Step 5: Solve for x
    x = 861,373,540.86/45,813.51
  6. Step 6: Final answer
    x = 18,801.74

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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.