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Finding the Fourth Proportional to 54,775.90, 82,166.55 and 28,531.90

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Solution

The fourth proportional to 54,775.90, 82,166.55 and 28,531.90 is: 42,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,775.90 : 82,166.55 = 28,531.90 : x
  2. Step 2: Convert to fraction form
    54,775.90/82,166.55 = 28,531.90/x
  3. Step 3: Cross multiply
    54,775.90x = 82,166.55 × 28,531.90
  4. Step 4: Simplify right side
    54,775.90x = 2,344,367,787.95
  5. Step 5: Solve for x
    x = 2,344,367,787.95/54,775.90
  6. Step 6: Final answer
    x = 42,799.26

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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.