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Finding the Fourth Proportional to 54,770.63, 82,155.95 and 13,217.63

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Solution

The fourth proportional to 54,770.63, 82,155.95 and 13,217.63 is: 19,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,770.63 : 82,155.95 = 13,217.63 : x
  2. Step 2: Convert to fraction form
    54,770.63/82,155.95 = 13,217.63/x
  3. Step 3: Cross multiply
    54,770.63x = 82,155.95 × 13,217.63
  4. Step 4: Simplify right side
    54,770.63x = 1,085,906,949.40
  5. Step 5: Solve for x
    x = 1,085,906,949.40/54,770.63
  6. Step 6: Final answer
    x = 19,826.45

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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.