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Finding the Fourth Proportional to 54,622.64, 75,380.64 and 30,750.15

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Solution

The fourth proportional to 54,622.64, 75,380.64 and 30,750.15 is: 42,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,622.64 : 75,380.64 = 30,750.15 : x
  2. Step 2: Convert to fraction form
    54,622.64/75,380.64 = 30,750.15/x
  3. Step 3: Cross multiply
    54,622.64x = 75,380.64 × 30,750.15
  4. Step 4: Simplify right side
    54,622.64x = 2,317,965,730.44
  5. Step 5: Solve for x
    x = 2,317,965,730.44/54,622.64
  6. Step 6: Final answer
    x = 42,435.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.