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Finding the Fourth Proportional to 54,253, 81,376.26 and 16,813.18

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Solution

The fourth proportional to 54,253, 81,376.26 and 16,813.18 is: 25,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,253 : 81,376.26 = 16,813.18 : x
  2. Step 2: Convert to fraction form
    54,253/81,376.26 = 16,813.18/x
  3. Step 3: Cross multiply
    54,253x = 81,376.26 × 16,813.18
  4. Step 4: Simplify right side
    54,253x = 1,368,193,707.11
  5. Step 5: Solve for x
    x = 1,368,193,707.11/54,253
  6. Step 6: Final answer
    x = 25,218.77

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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.