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Finding the Fourth Proportional to 18,795.15, 28,192.73 and 4,944.15

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Solution

The fourth proportional to 18,795.15, 28,192.73 and 4,944.15 is: 7,416.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.15 : 28,192.73 = 4,944.15 : x
  2. Step 2: Convert to fraction form
    18,795.15/28,192.73 = 4,944.15/x
  3. Step 3: Cross multiply
    18,795.15x = 28,192.73 × 4,944.15
  4. Step 4: Simplify right side
    18,795.15x = 139,389,061.31
  5. Step 5: Solve for x
    x = 139,389,061.31/18,795.15
  6. Step 6: Final answer
    x = 7,416.23

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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.