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Finding the Fourth Proportional to 54,228.72, 81,355.84 and 17,292.72

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Solution

The fourth proportional to 54,228.72, 81,355.84 and 17,292.72 is: 25,943.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,228.72 : 81,355.84 = 17,292.72 : x
  2. Step 2: Convert to fraction form
    54,228.72/81,355.84 = 17,292.72/x
  3. Step 3: Cross multiply
    54,228.72x = 81,355.84 × 17,292.72
  4. Step 4: Simplify right side
    54,228.72x = 1,406,863,761.48
  5. Step 5: Solve for x
    x = 1,406,863,761.48/54,228.72
  6. Step 6: Final answer
    x = 25,943.15

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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.