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Finding the Fourth Proportional to 12,495.48, 18,728.13 and 5,472.48

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Solution

The fourth proportional to 12,495.48, 18,728.13 and 5,472.48 is: 8,202.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,495.48 : 18,728.13 = 5,472.48 : x
  2. Step 2: Convert to fraction form
    12,495.48/18,728.13 = 5,472.48/x
  3. Step 3: Cross multiply
    12,495.48x = 18,728.13 × 5,472.48
  4. Step 4: Simplify right side
    12,495.48x = 102,489,316.86
  5. Step 5: Solve for x
    x = 102,489,316.86/12,495.48
  6. Step 6: Final answer
    x = 8,202.11

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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.