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Finding the Fourth Proportional to 45,832.72, 68,749.12 and 12,553.12

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Solution

The fourth proportional to 45,832.72, 68,749.12 and 12,553.12 is: 18,829.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,832.72 : 68,749.12 = 12,553.12 : x
  2. Step 2: Convert to fraction form
    45,832.72/68,749.12 = 12,553.12/x
  3. Step 3: Cross multiply
    45,832.72x = 68,749.12 × 12,553.12
  4. Step 4: Simplify right side
    45,832.72x = 863,015,953.25
  5. Step 5: Solve for x
    x = 863,015,953.25/45,832.72
  6. Step 6: Final answer
    x = 18,829.69

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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.