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Finding the Fourth Proportional to 54,063.90, 81,022.95 and 36,243.90

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Solution

The fourth proportional to 54,063.90, 81,022.95 and 36,243.90 is: 54,316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,063.90 : 81,022.95 = 36,243.90 : x
  2. Step 2: Convert to fraction form
    54,063.90/81,022.95 = 36,243.90/x
  3. Step 3: Cross multiply
    54,063.90x = 81,022.95 × 36,243.90
  4. Step 4: Simplify right side
    54,063.90x = 2,936,587,697.51
  5. Step 5: Solve for x
    x = 2,936,587,697.51/54,063.90
  6. Step 6: Final answer
    x = 54,316.98

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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.